Adobe's Principal Project Manager for Photoshop John Nack today announced on his blog that future versions of the company's Creative Suite packages will drop support for Macs running on PowerPC processors and become Intel-only offerings.
By the time the next version of the Suite ships, the very youngest PPC-based Macs will be roughly four years old. They're still great systems, but if you haven't upgraded your workstation in four years, you're probably not in a rush to upgrade your software, either. Bottom line: Time & resources are finite, and with big transitions underway (going 64-bit-native, switching from Carbon to Cocoa), you want Adobe building for the future, not for the past.
Additional information for Adobe's customers using PowerPC machines can be found on the FAQ page for Creative Suite. Nack also notes that news about other Adobe applications, including Flash Player and Acrobat Reader, will be released in the near future.
Apple's Mac OS X Snow Leopard, due for release next month, is also dropping support for PowerPC-based Macs.