Hmm, video works for me after upgrading, and the experimental depth hold seems to work quite well. I do wish there were a "hold depth at 0.3 meters above the bottom" feature :)
I did the upgrade via "write to SD card, copies to emmc on first boot".
I installed the simple theme UI plugin (http://community.openrov.com/forum/topics/theme-simple-theme) and it's very nice.
Our compass seems to move all over the place ... though I think it was doing this before we upgraded too. I'm not sure if there are magnets in the bottom of this pond, or if there's a software issue somehow, or if the magnets in the motors interfere (though another thread seemed to indicate they do not)...