From their own site:

http://www.apple.com/pr/library/2005/jun/06intel.html

Wouldn't have believed it (and didn't) from any other source. Now the wait begins to get all the details of how this will work, and if this means OS X on other boxes. Microsoft is still making Office for either OS X on PowerPC or Intel, so I'm guessing Apple boxes will still be very closed compared to a Dell or HP.