I have just returned from the Focus trade show at the Birmingham NEC in the UK.
As well as obtaining a cute little PS badge for my shirt I also managed to make an Adobe employee hint at when I will be able to purchase Photoshop CS5. If you haven't already seen the youtube previews you should take the time. The healing tool looks proper good.
Anyway dispite many of the Adobe team saying they couldn't say, or didn't know, one guy took me aside and said 'this summer" with a wink and a nod...
That sounds about right. Its in NDA Beta testing now to select few. LR3 will come along first (next month or 2 I guess) so it would make sense for CS5 just after. I also guess we could be in for a new ACR as well, so any new camera adopters should prepare for the upgrade need.