MBP Revisions?

Hi All,

I know that when the MBP was originally realesed, there was a creep of several revisions as various little problems were worked out. If the MBP gets an update to Merom sometime soon, would it be prudent to wait for a revision or two to occur, or is that only necessarry when the computer is changing form factors (a chip update not perturbing the running of the computer very much)? Thanks.