A77 is just around the corner, I can almost smell it! Now the question is: are our lenses good enough for it? I might be wrong, but I understanding is that lesser lenses will show their weakness due to higher pixel density. On the other hand, older lenses on full frame like A900 are quite forgiven. So the pet theory is the APS-C demand much better (expensive) lenses, while more expensive FF body can take cheaper, lesser lenses and still achieve good result.
Well I have a CZ 16-80 and a 70-300G so if they aren't good enough we may as well all not bother.
I also have a Minolta 28mm F2 which I think should be fine.
The question mark will be over my 11-18 and 500mm mirror but then for me absolute sharpness has never been something I looked for in 11-18 photos (not that it isn't sharp enough) - it's the effect that lens gives and the 500 is pretty sharp anyway and it is its lower contrast people often mistake for lack of sharpness.