Thanks, michaa. It is officially released by Adobe:
https://www.adobe.com/software/flash/about/I think the main feature of the updateflashplugin script is md5 check. I update manually since I would rather have known security exploits fixed as soon as possible than worry about a data transmission error. You can always download twice and compare md5sums if being paranoid.
These are the md5sums I got:
78f56e5bb90ae1756a425f46534bcedd install_flash_player_11_linux.x86_64.tar.gz
1f1d9b3123f17998241872ad8ed465c5 install_flash_player_11_linux.i386.tar.gz
As for Pepper Flash, still waiting on 14.0.0.177 to show up in Linux Chrome beta...