They just quietly upgraded the bus speeds on all the laptops and now the MBPs can have a whopping 2.6Ghz CPU, except for the entry model. The new MacBooks can even have 4GB of RAM now, but you have to check the Apple Store to find out some more stuff.

Look it up before getting bent over one model, since you may want to try a regular MacBook if you want 2.2Ghz. Check it out some.
-BMF