After considering all the information, we decided that the benefits of the new workflows and features outweigh the downside of dropping PowerPC support. As a result, After Effects CS3 will be the last universal binary Macintosh version and After Effects CS4 will be Intel-only on the Mac. Premiere Pro, Encore, and Soundbooth are already Intel-only in CS3, so Production Premium Suite users will already be accustomed to this requirement.
By focusing on Intel Macs, we save a huge amount of engineering and testing time. This means that we will be able to complete more features for a larger group of customers and deliver the best release possible. Plus, some CS4 technology is so new that it never existed on PowerPC Macs.
Does this affect you?