Spanish site vandal.net posted his impressions about the final versions of Generations (PS3). A brief summary:
-Graphics improved and there are no fps issues anymore (30 fps).
-Classic Sonic controls also improved.
-Music is awesome.
-10 secondary missions per stage.
-Red rings are also present, increasing replayability.
-A lot of other things they liked but cant talk about.
-Best Sonic game in last years.
If anyone wants to read: http://www.vandal.net/avances/ps3/sonic-generations/14249/4
PD Boss trailer rocks, yeah