Apple and Adobe have had a fairly cozy relationship over the years, a few misunderstanding not withstanding. We can’t help but wonder how we’d define their relationship in a year or so when Adobe is shipping 64-bit applications for the Windows platform while OS X users have nothing but 32-bit options. When Mac users begin complaining, they’ll really only have to look to Apple to find the source of their problem.
"At the WWDC show last June, however, Adobe & other developers learned that Apple had decided to stop their Carbon 64 efforts. This means that 64-bit Mac apps need to be written to use Cocoa (as Lightroom is) instead of Carbon," he explained. "This means that we'll need to rewrite large parts of Photoshop and its plug-ins (potentially affecting over a million lines of code) to move it from Carbon to Cocoa."
Given the size and complexity of Photoshop alone, it won’t be until at least CS5 before Adobe is able to port and optimize their code. By that time we might be expecting OS X 10.6.