Well I can't wait until 9800 GTX comes out either. That is going to be my next big upgrade (I count added HDDs and fans/heat sinks etc to be minor upgrades), and after that, maybe and let me reiterate, maybe, a Penryn quad.
Even if I do upgrade to Penryn, it wouldn't be until at least a year or two from now, because I have a feeling this Q6600 will last me a very long time, especially once I get a decent heat sink so I can overclock it properly.