I've just been hunting around in the rumor mills about the 70D as well - as I've been looking a little bit to move from my T3i to the 60D. I realize it's not much of a jump at all - but the 7D is out because of the need for CF cards, and all i really wish I had was the thumb wheel.
On the flip side, as long as you have
something to shoot with now, I'd wait for the release of the 70D. Even if it turns out to be just an incremental upgrade over the 60D, the price of the 60D should drop, freeing up more of your money for glass

I'm really hoping for a new sensor in the advanced consumer/consumer bodies with more MP and better ISO. Some extra X-type AF points wouldn't hurt either. haha