I am sure most of you guys have seen this, however, for those of you that have not, this comes from a poster called Tailpipe over at apple insider and it sounds reasonable. It was posted on 02-01-2008 at 11:12 AM and the link for reference is below.
"This info comes to you from London via an Englishman working at Apple, (and there are more than you think ;-))
A revised MacBook Pro with a Leopard 10.5.2 update was meant to debut at MacWorld but neither was ready.
The delay for the MBP was caused by Intel Penryn processors not being available due to some production glitch. As we all know, Apple doesn't like to announce products too far ahead of their shipping dates - with the notable exception of the iPhone - so decided to delay the launch. Penryn-based PCs now good to go and begin shipping Monday.
Expect new MBP 15-inch and 17-inch within two weeks. 17-inch gets LED.
New MBP DOES feature a slightly revised case design with the new black keyboard from MBA and a larger trackpad, but is basically very similar to existing design. Think evolution not revolution.
The idea is to achieve a commonality of look across the range.
SSD will be an option offering an exceptionally fast boot time < 30 seconds.
Also seen lurking in the corridors of Cupertino was an aluminum MacBook 13". Initially available in silver, my source reckons annodised black, blue, pink and other colours will be available around September. New MacBooks will be a big story later this year. One of the range (I don't know which, maybe the black one) will have a superior spec that basically makes it a MacBook Pro 13"."
http://forums.appleinsider.com/showthread.php?t=83903