Im in a situation where im looking to buy my first dslr but am also unsure as to what to purchase. Iv had my eye on the 60D for quite some time and now the price has dropped considerably. The problem im facing is that this product is over 2 years old and from what iv read a replacement or 60d-7D amalgamation announcement should be coming soon, however i have no idea when we could expect the product to hit store shelves or its release price. I have more than enough money to purchase a 60D now and still have a fair amount left over or purchase its replacement upon release. As most of you know a dslr purchase is a mini investment and i dont want to regret buying a 60D so late on when a new one could be just around the corner, with better features/IQ/sensor etc.
I doubt that we'll see much higher IQ in next APS-C models in raw (JPG is a different story though). IQ of the last two rebels got rather worse than better. Even if the new sensor will have the rumoured 24 MPix and you would use a high quality lens, it won't improve sharpness at apertures of f/5.6 and slower due to diffraction.
My guess is that the major improvement of 70d will be GPS, Wifi, touchscreen and better JPG-Quality. If you can live without that I'd recommend to get the 60d and invest the rest of your budget in lenses (especially fast lenses and rather EF than EF-S mount, so you can use them still later when you'll upgrade to FF).