On the iOS 7 page, it indicates that iOS 7 is compatible with:
- iPad 2
- iPad with Retina display
- iPad mini
I'm sure iOS 7 will work on the 3rd gen iPad (right Apple?). However, I'm disappointed that iOS 7 won't work on the older iPod touch models. Looks like iOS 7 will only run on the 5th gen iPod touch.
Speaking of older iPads and iPods, you can get some nice deals on refurbished products from the Apple Outlet.