I also noticed that this early release update has totally fixed another very annoying problem I was having. I am not sure this was intended, but I am very happy about it.
The problem: When chopping up real recorded audio drum tracks for quantizing, selecting all the clips, then pressing "Q" for quantize, SONAR would lose the selection and only quantize one or two "columns." I would have to close SONAR down completely, start up again, then I would get one chance to get it to work correctly.
Now: It works as expected every time. This is a huge relief! Also it seems more responsive and snappier. This update is a very huge one and is making a massive difference for me. Thank you Cakewalk!