It's probably time you said goodbye to your PowerPC-based Mac.
The company's decision follows Apple's announcement in June that it was discontinuing support for the PowerPC in its new operating systems, starting beginning with Mac OS X 10.6 (Snow Leopard). With Apple's future development focused on Intel Macs, Adobe is aligning its resources accordingly.
According to Adobe, existing customers who own Creative Suite 3 and Creative Suite 4 will still be able to use the software on either a PowerPC-based Mac or an Intel-based Mac without having to make any changes. However, Adobe will provide support for these two suites only to address critical issues that may arise.
Creative Suite is Adobe System's collection of well-known industry-standard graphic design, video editing, and Web development applications. These applications include Photoshop, Illustrator, InDesign, Acrobat, Flash, and many others.
While Snow Leopard has not been released yet, and the new version of the Creative Suite hasn't been announced, either, Adobe decided to announce these changes now so its customers will have time to plan their migration strategy accordingly. This means you should go get yourself an Intel-based Mac if you haven't done so already.
For more information on the discontinuation of support, check out Adobe's FAQ.