A screenshot of the Snow Leopard system requirements has shown up online and includes the following:
- An Intel Processor
- An internal, external, or shared DVD drive
- At least 512MB of RAM
- A built-in display or a display connected to an Apple-supplied video card supported by your computer
- At least 9GB of disk space available, or 12GB of disk space if you install developer tools
Read that first one again, this means that PowerPC processors aren’t being supported in Snow Leopard.
I’m not surprised that they are doing this, by the time Snow Leopard is released the newest computers with PowerPC are going to be roughly 3 years old. It isn’t like Apple won’t support 10.5 any more, Apple still supports OS X Tiger and Leopard will be support for many months after the release of Snow Leopard.