All I'm hearing so far has been pretty decent, however cameras like the A65 might require a slight adjustment for the user - it's easy to THINK things are not performing as well wthout taking into consideration the huge resolution and MP jump with the 24MP sensor. For example, if you view all photos at 100% viewable on your computer screen, things like high ISO noise can end up looking bad - worse than the older sensors. Many people have become confused or disappointed - but what should really be taken into consideration is that at 100% viewable on a 24MP photo, you're looking at a significantly smaller slice of the overall photo - you're blowing up all the details AND all the problems...many believe that it would be more fair to consider the comparison of the A65/77's output against the 16MP cameras by viewing them at a lesser magnification, or resizing to match the 16MP sensor's image dimensions. It seems that when most folks resize the 24MP sensor's output to match the 16MP sensor's output, the differences are MUCH smaller between them, with the high ISO performance being almost a wash. The A65 performs better than the A55, again due to the extra resolution that provides much more detail, room to perform noise reduction, and to resize to the same overall image size as the 16MP photo. Where the A65/77 seem to not quite keep up is when comparing them at 100% to a fullframe 24MP sensor, or when jus comparing pixel level noise at 100% against the 16MP sensors.
They also seem to have mostly solved all the issues that occasionally came up on the A33/55 SLTs - no ghosting issues reported with specular highlights, no overheating issues reported during heavy video or burst shooting, and a much higher-spec EVF.
I still prefer the OVF on the A580 for my own shooting, but I'd at least consider the A77/65 to be much closer than the previous SLTs at replacing a traditional DSLR for my type of shooting. It's not there 100% yet in my mind, but definitely addressed quite a few problems from the first-gen.