It should also be noted that serial numbers are platform-specific. A Photoshop CS2 for Windows license will not generate a valid Photoshop CS3 beta for Mac OS X key, for instance.] ...

Serial numbers not working The Photoshop CS3 beta serial number generation page is rejecting valid serial numbers for some users. As aforementioned, a CS2 serial number is required to remove the ...

True to rumors, Adobe has announced a Photoshop CS3 Beta program available to customers with a serial number from either Adobe Photoshop CS2, Adobe Creative Suite 2, Adobe Creative Suite ...

People need a serial number from Photoshop CS2 or other Adobe bundles, including Creative Suite 2, to access the Photoshop CS3 beta.

The Intel-native version of Photoshop will be released as a beta on Friday, Dec. 15, 2006, and will be available to all users that have a valid Creative Suite 2 serial number.

This feature alone justifies the upgrade to CS3. CS3 also has plenty of other enhancements and refinements to Photoshop, Bridge (Adobe's photo organizer app), and Camera Raw available.