If I remember correctly (ThinkSecret has now pulled the article at the request from Adobe legal), Adobe considers dropping OS 9 support to add OS X only features. I don't think this would mean cocoa at this point (maybe version 9...), allthough a complete rewrite of the app has been discussed earlier. PS 8 will include many OS X features, and, hopefully, also include features only found in OS X (make those Wintel users drool even more!!!)
As for the Adobe dropping Mac support all together.... What kind of dumb ass stupid moron posted this in the first place???? And why, WHY, does some people even belive in it (like a couple of posters in another thread here at MR). To make it simple. What kind of company would drop support for 50% of their installed user base, especially when their installed Mac user base consists to a large degree of multi-billion printing industry, webdesigners, smaller design firms, and others who have invested big time in the Mac platform and Adobe products...