Since I was mostly uploading NMU these days and sponsoring some of them, I used debdiff a lot.

One thing I like with debsign or debrelease, is that you can call them while you are in the source directory, without any argument. So I wrote a little small patch allowing to run debdiff without any argument too. It will diff between the last two versions found in debian/changelog.

The next step would be to debdiff between your current tree and the last version. But I am too lazy.

(Yes, patch is on the BTS too, but spohr is down...)