Considering that the 7D is less than a year old, and that a replacement probably won't be anywhere near the horizon for another 2-3+ years (I'd say Nov-Dec 2012 at very, very earliest) - you may as well go ahead.
Here's the thing: there's always 'waiting' involved with anything you buy. Essentially, one can put off buying anything simply by convincing themselves that a newer, better model will come out soon that should be bought instead. Of course, once that's bought, a newer model comes out and most probably buyers's regret sinks in. And it's off to a new lens/camera body.
The 7D is a great camera. Now that you can't really compare the 60D to it, I'd suggest upgrading to it. The FPS may be a bit of an overkill for some, but it's always handy, and the body is sturdy and metal.
Think about it, anyway. What are your priorities at the moment? Discard obvious factors - like if you're planning to soon upgrade to FF.
Anyway, I wouldn't worry about it too much. You're not buying a 1D MK IV - though, wouldn't that be nice? - but a $1200~ (in Australia, about $1350+, so probably even less for the US) body that's proven popular. And there's a reason behind it.