I believe there was at least some speculation that the next XXD would be moved upmarket where the 50D was as opposed to what some consider the 60D to be now - more of a super rebel. I believe this is based more on build quality than performance, but I'm not sure.
Regardless, this may or may not be good for you. Upmarket may mean a product that meets your expectations coming from a 40D, but it may also mean a higher price than the 60D.
The next XXD is on my radar, so I'm hoping the price doesn't shift too much, but I am definitely hoping for improved high ISO performance, so the additional cost may be worth it if that is the case.
Time will tell.