I’m late to the game of predicting when the next update of the MacBook Pro will be released, unless you count the fact that I waited until Steve Jobs made his Keynote presentation at MacWorld Expo in January instead of placing an order as an outright prediction.
I think the next update of the MacBook Pro will take place on the Tuesday after the Mac-related news and rumors sites stop predicting that the update will take place.
Having said that, I hope that the update is announced sometime between tomorrow and the end of February.