According The Register [1], readers could see a reference to "PowerBook G5" on Apple web site's PowerBook product page. A portion of the source code of the page was referring to the following url:

http://switch.atdmt.com/action/apple_g5_powerbook [2]

Apple has now changed again this url to:

http://switch.atdmt.com/action/apple_g4_powerbook [3]

All rumour sites' sources (including our sources) were wrong or not very precise on the release date of the new Powerbooks, are they wrong for the processor too? Is it a typo? Or is Apple having fun by confusing us?

Sources and current PowerBook supplies suggest [4] an update for the PowerBook line during next week.

UPDATE: The Apple Display 17" page [5] of Apple's Canadian web site mentions "PowerBook G5" as one of the required configurations to use the display.