Hi
Tonight's update included a warning about hddtemp. It said that it wasn't being maintained and that switching to the kernel module drivetemp was a smart move. After the update finished, I looked into hddtemp and found that there's a new beta in unstable. Whether the maintainer saw the update warning, or, just decided it was time, I'll never know, but, the warning is moot since the maintainer decided to work on it.
Just an FYI
Although I am going to look into drivetemp at some point.