I've read through the "Newest 8330 OS: v4.5.0.56" thread expecting people to be telling of all the improvements with .56 compared to the last official release but there is no talk about that. You'd think that would be one of the big talking points in a thread about a new release, would be all the new features?
Only things I've found that were different from my 4.3 Sprint OS, and the .56 OS are "Prev and Next buttons" in the media player instead of just Play/Pause, Stop, and also Geotagging for pictures.