I'm having the same "problem" and I also assumed it was just a matter of waiting, as usual. But I was surprised that my other system (running aptosid/Sid, not siduction), which has been updated more recently, had no removals at all.
On aptosid:
The following NEW packages will be installed:
libplacebo72
The following packages will be upgraded:
analitza-common cantor carla-bridge-linux32:i386 carla-bridge-win64 carla-bridge-wine64 carla-git
carla-git-data carla-lv2 carla-vst cups-filters cups-filters-core-drivers elinks elinks-data
fonts-hosny-amiri fuse3 gir1.2-harfbuzz-0.0 imagemagick-7-common kalgebra kalgebra-common kget
libanalitza8 libanalitzagui8 libanalitzaplot8 libanalitzawidgets8 libasound2 libasound2:i386
libasound2-data libasound2-dev libatopology2 libblockdev-crypto2 libblockdev-fs2
libblockdev-loop2 libblockdev-part-err2 libblockdev-part2 libblockdev-swap2 libblockdev-utils2
libblockdev2 libcupsfilters1 libexif12 libexif12:i386 libfontembed1 libfuse3-3 libharfbuzz-dev
libharfbuzz-gobject0 libharfbuzz-icu0 libharfbuzz0b libharfbuzz0b:i386 libidn11 libidn11:i386
libmagick++-7-4 libmagickcore-7-7 libmagickwand-7-7 libvlc-bin libvlc5 libvlccore9 mpv
qml-module-org-kde-analitza recoll recollcmd recollgui usb.ids vlc vlc-bin vlc-data vlc-l10n
vlc-plugin-base vlc-plugin-qt vlc-plugin-video-output
68 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/97.0 MB of archives.
After this operation, 7,795 kB of additional disk space will be used.
On siduction:
The following packages were automatically installed and are no longer required:
accountsservice apt-config-icons-hidpi apt-config-icons-large apt-config-icons-large-hidpi
baloo-kf5 bluedevil breeze breeze-cursor-theme breeze-gtk-theme catdoc digikam-data drkonqi
frameworkintegration gimp-data ieee-data kde-config-sddm kde-style-breeze kde-style-oxygen-qt5
kded5 kf5-kdepim-apps-libs-data kf5-messagelib-data khotkeys khotkeys-data kimageformat-plugins
kio-ldap kmenuedit kscreen ksysguard-data ksysguardd kwin-style-breeze kwrited
libaccountsservice0 libamd2 libappstreamqt2 libastro1 libbabl-0.1-0 libboost-date-time1.67.0
libboost-filesystem1.67.0 libboost-iostreams1.67.0 libboost-locale1.67.0 libboost-system1.67.0
libboost-thread1.67.0 libcamd2 libccolamd2 libcholmod3 libcolorcorrect5 libdolphinvcs5 libepub0
libflite1 libfluidsynth2 libgdal26 libgdcm3.0 libgegl-common libgexiv2-2 libgps26
libgstreamer-plugins-bad1.0-0 libinstpatch-1.0-2 libkf5akonadicalendar-data
libkf5akonadicalendar5abi1 libkf5akonadinotes5 libkf5akonadisearchdebug5 libkf5akonadixml5
libkf5alarmcalendar-data libkf5alarmcalendar5abi1 libkf5calendarsupport-data
libkf5calendarsupport5abi1 libkf5calendarutils5 libkf5dav-data libkf5dav5 libkf5eventviews-data
libkf5eventviews5abi1 libkf5followupreminder5 libkf5grantleetheme-plugins libkf5grantleetheme5
libkf5gravatar-data libkf5gravatar5abi2 libkf5holidays-data libkf5holidays5 libkf5imap-data
libkf5imap5 libkf5incidenceeditor-data libkf5incidenceeditor5abi1 libkf5kaddressbookgrantlee5
libkf5kaddressbookimportexport5 libkf5kdepimdbusinterfaces5 libkf5kmanagesieve5 libkf5konq6
libkf5kontactinterface-data libkf5kontactinterface5 libkf5ksieve-data libkf5ksieve5
libkf5mailcommon-data libkf5mailimporter5 libkf5mailimporterakonadi5 libkf5mbox5
libkf5messagecore5abi1 libkf5messagelist5abi1 libkf5mimetreeparser5abi1 libkf5pimcommon-data
libkf5pimcommonakonadi5abi1 libkf5screen-bin libkf5screen7 libkf5sendlater5 libkf5style5
libkf5sysguard-bin libkf5sysguard-data libkf5tnef5 libkfontinst5 libkfontinstui5 libkgantt2
libkolabxml1v5 libkpimitinerary-data libkpimitinerary5 libkpimpkpass5 libksgrd7
libksignalplotter7 liblensfun-data-v1 liblensfun1 liblilv-0-0 libmarblewidget-qt5-28 libmarkdown2
libmetis5 libmjpegutils-2.1-0 libmodplug1 libmpeg2encpp-2.1-0 libmplex2-2.1-0 libmypaint-1.5-1
libmypaint-common libnode64 libnorm1 libnotificationmanager1 libofa0 libopencv-calib3d4.2
libopencv-core4.2 libopencv-features2d4.2 libopencv-flann4.2 libopencv-highgui4.2
libopencv-imgcodecs4.2 libopencv-imgproc4.2 libopencv-ml4.2 libopencv-objdetect4.2
libopencv-videoio4.2 liboxygenstyle5-5 liboxygenstyleconfig5-5 libpgm-5.2-0 libphonenumber7
libplacebo7 libplasma-geolocation-interface5 libpowerdevilcore2 libpowerdevilui5 libprocesscore7
libqalculate20 libqalculate20-data libqt5concurrent5 libqt5networkauth5 libqt5serialport5
libqt5xmlpatterns5 librubberband2 libsasl2-modules-kdexoauth2 libscim8v5 libsdl2-2.0-0
libserd-0-0 libshp2 libsocket++1 libsodium23 libsord-0-0 libsoundtouch1 libspandsp2 libsratom-0-0
libsrtp2-1 libtaskmanager6abi1 libtbb2 libumfpack5 libusrsctp1 libvidstab1.1 libvo-aacenc0
libvo-amrwbenc0 libweather-ion7 libwildmidi2 libxcb-dpms0 libxcb-record0 libxres1 libzbar0
libzmq5 libzxingcore1 marble-plugins marble-qt-data milou opencv-data oxygen-sounds phantomjs
plasma-desktop-data plasma-discover plasma-discover-common plasma-integration
plasma-workspace-data powerdevil powerdevil-data python3-software-properties
qml-module-org-kde-activities qml-module-org-kde-kcm qml-module-org-kde-kholidays
qml-module-org-kde-kio qml-module-org-kde-kwindowsystem qml-module-org-kde-qqc2desktopstyle
qml-module-org-kde-solid qml-module-qt-labs-folderlistmodel qml-module-qt-labs-settings
qml-module-qtwebkit rtmpdump software-properties-common software-properties-kde systemsettings
timgm6mb-soundfont user-manager xsane-common youtube-dl
Use 'apt autoremove' to remove them.
The following packages will be REMOVED:
akonadiconsole akregator digikam digikam-private-libs dolphin dolphin-plugins ffmpeg ffmpegthumbs
gimp gstreamer1.0-libav gstreamer1.0-plugins-bad handbrake kaddressbook kalarm kde-baseapps
kde-config-touchpad kde-plasma-desktop kde-standard kdepim kdepim-addons kdepim-runtime
kdepim-themeeditors kinfocenter kmail knotes konq-plugins konqueror konsolekalendar kontact
korganizer ksysguard libavdevice58 libavfilter7 libgegl-0.4-0 libgimp2.0 libgnustep-base1.26
libhfstospell10 libkf5baloowidgets-bin libkf5baloowidgets5 libkf5filemetadata-bin libkf5ksieveui5
libkf5mailcommon5abi2 libkf5messagecomposer5abi1 libkf5messageviewer5abi1 libkf5templateparser5
libkf5webengineviewer5abi1 libkpimgapicalendar5 libkpimgapicontacts5 libkpimgapitasks5
libkpimimportwizard5 libprocessui7 libqtav1 libqtavwidgets1 libsrt1 mbox-importer mpv
pim-data-exporter pim-sieve-editor plasma-desktop plasma-mediacenter plasma-widgets-addons
plasma-workspace qml-module-qtwebengine sane smplayer smplayer-l10n smplayer-themes xsane
The following NEW packages will be installed:
libaudio2 libboost-date-time1.71.0 libboost-filesystem1.71.0 libboost-iostreams1.71.0
libboost-locale1.71.0 libboost-thread1.71.0 libdirectfb-1.7-7 libenca0 libgdal27
libgnustep-base1.27 libhfstospell11 libicu67 libkf5pulseaudioqt2 libmfx1 libnode72 libplacebo29
libsrt1-gnutls libvorbisidec1 linux-headers-5.6.17-towo.1-siduction-amd64
linux-image-5.6.17-towo.1-siduction-amd64 mplayer qml-module-org-kde-people
The following packages have been kept back:
libqt5webengine5
The following packages will be upgraded:
adwaita-qt apt apt-transport-https apt-utils aptitude b43-fwcutter baloo-kf5 bind9-dnsutils
bind9-host bind9-libs ca-certificates cryptsetup cryptsetup-bin cryptsetup-initramfs
cryptsetup-run cups-browsed cups-filters cups-filters-core-drivers dbus dbus-user-session
dh-elpa-helper dnsutils docbook-xsl efivar feh firefox firefox-l10n-pt-br firmware-b43-installer
firmware-b43legacy-installer fonts-gfs-baskerville fonts-hosny-amiri fonts-lyx fonts-vlgothic
freerdp2-x11 fuse3 gdal-data gir1.2-gdkpixbuf-2.0 gir1.2-javascriptcoregtk-4.0 gir1.2-webkit2-4.0
git git-man gnustep-base-common gnustep-base-runtime grub-common grub-efi-amd64-bin
grub-efi-ia32-bin grub-pc grub-pc-bin grub2-common insync intel-microcode inxi iproute2 iptables
kate kate5-data kcalc kde-spectacle kdeconnect kdenetwork-filesharing kget khelpcenter
kolourpaint krb5-locales ksystemlog kwrite latexdiff libapt-pkg6.0 libarchive13 libarmadillo9
libasm-java libasound2 libasound2-data libatopology2 libavcodec58 libavformat58 libavresample4
libavutil56 libbabl-0.1-0 libblockdev-crypto2 libblockdev-fs2 libblockdev-loop2
libblockdev-part-err2 libblockdev-part2 libblockdev-swap2 libblockdev-utils2 libblockdev2
libcap-ng0 libcdr-0.1-1 libclass-xsaccessor-perl libcmis-0.5-5v5 libcommon-sense-perl
libcpupower1 libcryptsetup12 libcupsfilters1 libdbus-1-3 libdolphinvcs5 libe-book-0.1-1
libefiboot1 libefivar1 libegl-mesa0 libegl1-mesa libexif12 libfontembed1 libfreerdp-client2-2
libfreerdp2-2 libfuse3-3 libgbm1 libgdk-pixbuf2.0-0 libgdk-pixbuf2.0-bin libgdk-pixbuf2.0-common
libgegl-common libgexiv2-2 libgl1-mesa-dri libgl1-mesa-glx libglapi-mesa libglib-perl
libglx-mesa0 libgmp10 libgnutls-openssl27 libgnutls30 libgpg-error0 libgssapi-krb5-2
libguava-java libharfbuzz-icu0 libharfbuzz0b libhttp-daemon-perl libical3 libidn11 libip4tc2
libip6tc2 libjavascriptcoregtk-4.0-18 libjs-sphinxdoc libk5crypto3 libkf5baloo5
libkf5balooengine5 libkf5guiaddons5 libkf5itemmodels5 libkf5kdelibs4support-data
libkf5kdelibs4support5 libkf5kdelibs4support5-bin libkolabxml1v5 libkpathsea6 libkrb5-3
libkrb5support0 liblouis-data liblouis20 libmaven-resolver-java libmhash2 libmm-glib0
libmojolicious-perl libmspub-0.1-1 libmtdev1 libneon27-gnutls libnftables1 libnftnl11
libnghttp2-14 libnode64 libnss-myhostname libnss-mymachines libnss-systemd libnumbertext-1.0-0
libnumbertext-data libokular5core9 libopencv-calib3d4.2 libopencv-core4.2 libopencv-features2d4.2
libopencv-flann4.2 libopencv-highgui4.2 libopencv-imgcodecs4.2 libopencv-imgproc4.2
libopencv-ml4.2 libopencv-objdetect4.2 libopencv-videoio4.2 liborcus-0.15-0
liborcus-parser-0.15-0 libpam-systemd libperl5.30 libphonenumber7 libpostproc55 libpq5
libptexenc1 libqalculate20 libqt5concurrent5 libqt5core5a libqt5dbus5 libqt5gui5 libqt5network5
libqt5opengl5 libqt5positioning5 libqt5printsupport5 libqt5sql5 libqt5sql5-mysql
libqt5sql5-sqlite libqt5test5 libqt5webenginecore5 libqt5webenginewidgets5 libqt5webkit5
libqt5widgets5 libqt5xml5 libqxp-0.0-0 libre2-7 libreoffice libreoffice-base
libreoffice-base-core libreoffice-base-drivers libreoffice-calc libreoffice-core libreoffice-draw
libreoffice-impress libreoffice-kde5 libreoffice-kf5 libreoffice-math libreoffice-plasma
libreoffice-qt5 libreoffice-report-builder-bin libreoffice-sdbc-mysql libreoffice-sdbc-postgresql
libreoffice-writer librsvg2-2 librsvg2-common libsqlite3-0 libsqlite3-dev libswresample3
libswscale5 libsynctex2 libsystemd0 libtag1v5 libtag1v5-vanilla libtexlua53 libtexluajit2
libtext-csv-xs-perl libtommath1 libudev1 libunistring2 libuno-cppu3 libuno-cppuhelpergcc3-3
libuno-purpenvhelpergcc3-3 libuno-sal3 libuno-salhelpergcc3-3 libuv1 libvisio-0.1-1 libvlc-bin
libvlc5 libvlccore9 libvoikko1 libvte-2.91-0 libvte-2.91-common libvulkan1 libwebkit2gtk-4.0-37
libwinpr2-2 libwww-perl libxerces-c3.2 libxi6 libxml2 libxml2-utils libxtables12 libz3-4
libzmf-0.0-0 libzstd1 linux-cpupower linux-headers-siduction-amd64 linux-image-siduction-amd64
linux-libc-dev make man-db manpages manpages-dev mesa-va-drivers mesa-vdpau-drivers
mesa-vulkan-drivers modemmanager nano nftables nodejs nodejs-doc okular openssh-client
openssh-server openssh-sftp-server ovmf pci.ids perl perl-base perl-modules-5.30 python3-gdal
python3-lxml python3-pyqt5 python3-sip python3-smbc python3-uno qml-module-qtwebkit
qt5-gtk-platformtheme rubygems-integration sqlite3 systemd systemd-container systemd-coredump
systemd-sysv systemd-timesyncd tex-common texlive-binaries udev unar uno-libs-private ure usb.ids
vlc vlc-bin vlc-data vlc-l10n vlc-plugin-base vlc-plugin-notify vlc-plugin-qt vlc-plugin-samba
vlc-plugin-skins2 vlc-plugin-video-output vlc-plugin-video-splitter vlc-plugin-visualization vrms
xautomation xfsprogs yudit-common
323 upgraded, 22 newly installed, 68 to remove and 1 not upgraded.
Need to get 0 B/630 MB of archives.
After this operation, 155 MB of additional disk space will be used.
That seems unusual, as transitions usually affect both systems...