I have the same problem. I'm also looking forward to the 70D, but I'm not considering the 60D. Why? The sensor is pretty old (3 years), the autofocus system its not that much better than the one in the 650D. I think the 70D will have some nice improvements over the 60D, which was kind downgraded from the 50D in its position in the lineup.
It looks like the 7D will be succeeded by the 6D (Fullframe), so the 70D could indeed move up a little bit again.
I considered the switch to FF after I head the specs and the price of the 6D. The camera itself is affordable, but when I sum up the money I would have to invest in lenses, then it is too much money for me. The new 24-70 f2.8 is 2300$, the old one still 1400$; the EF-S 17-55 f2.8 on the other hand is 1000$, the also very nice EF-S 15-85 is down to 650$. So even if though the body is affordable, the money for the lenses is just too much.
So it seems, that I have to live with my trusty old 350D for a few month more. But one thing I know for sure is, that a new camera won't improve my compositions, so I can live with what I have.