Mac Book Thin and MBP : Wud it delay the MBP upgrade

The rumor has been from a long time that Apple is going to release a Ultra Thin ( about 1/2 " thick ) Mac Book - refered to as MacBookThin (MBT). If AppleInsider is to be believed the MBT would indeed make its debut at the MacWorld 2008. Would this mean that Apple was focusing so much on the MBT that it might have decided to delay the Upgrade of MBP ?? 

I dont think so, but it is possible - i am keeping my fingers crossed as i have been waiting to buy the new MBP from a long time.

Please post comments or any info about MBP update ... Thanks !