WWDC PowerBook G5 2.2GHz?

In an anonymous post to Craig's List, one participant claims:

On June 28th, 2004, expect some very big changes in the Powerbook line up!
For now, all I can say is the entry level 12" Powerbook G5 will be at 1.6Ghz 12" --High end will
have a new G5 processor capable of speeds upto 2.2Ghz. One last thing, the memory on all models will
max. @ 4Gb. So keep a close eye and hold off on any big Laptop purchases, because the event we have been waiting for has arrived.

Expect the unexpected.

Obviously anonymous mailing list posts lack much credibility.