Did you try googling it? There are comparison videos and articles already although none have taken account the image quality, noise and dynamic range performance of the 70D as the tested models were pre-production.
-70D has a much superior AF system (at least on paper) with 19 all cross type AF ponts.
-The 70d shoots 7fps compared to the 5.3 fps of 60D.
- 70D has a touch screen
- 70D has wifi for photo transferring and remote stills shooting
- 70D has 98% viewfinder compared to the 96% viewfinder of the 60D
- 70D also has built in HDR mode and some creative filter things
Other than that, as you know the 70D has some cool video AF thing that really looks like it works well and has a new sensor. Sensor performance will come later as soon as reviewers get their hands on a production model.