Ask yourself:
1)Do you have the cash to do it? IF not, you are finished. Others, read on
2)Do you care if the reviews are not out on the new cameras? If you do, you are finished. Others, read on.
3)Is your equipment about to self destroy so quickly that 1 and 2 don't matter? If it is, read on.
4)Do you follow the herd even when it has been spooked? If yes us let us know where it is going. (just curious!)
5)Will the eventual difference in performance in whatever spec you worry about make a substantive and noticeable difference to your performance as a photographer paid or otherwise? If yes, you need to read 2. You are finished.