trust me, you dont want to keep waiting for new stuff.....
i've put mine on hold for nearly 3 months now, just because of a single GFX card.....
the other thing you can consider, is how much it'll cost and how much gain you get.
example, 3 months ago, i can only buy E6300 from my limited budget, so i got it, but now, its only 140odd quid for a E6600......but newer chips have came out since, more expensive, and not a lot more gain.