I played around with the 1.01b build 565 last night on my SD750 and saw lots of improvements and updates since loading the previous version.
Scripts seemed to be working, RAW, zebra highlighting, the histogram, zoom in video, higher bit-rate video, I tried the bracketing in continuous mode and think it worked (not 100% certain). I also tried the high speed shutter override, it might have worked - I'll do some more testing this weekend and report.
The biggest problem was with the menus. As stated already the jog wheel menu keeps appearing and several times the entire menu would disappear (or everything but the top line would disappear). When it did disappear I could move the jog wheel to select a new line and the menu would re-appear.
Thank you all so much for the work to finish this version!