As a side note in a news article posted by appleinsider, they say sources expect new powerbooks in late February. The details of the pbooks are still unknown according to ai.
http://www.appleinsider.com/article.php?id=810
On a side note, AppleInsider sources expect Apple to have introduced new PowerBook models by late-February. Specifics are not yet available
http://www.appleinsider.com/article.php?id=810