I agree Steve. The D4 is literally just out and I don't see anything really wrong with it. I'm amazed almost each time I go out with it, what it can do.
Waiting around for the next iteration of the D4, if any, and I suspect there won't be one, doesn't make a lot of sense to me at this point in time. In a couple of years or more like it 3, then that would be another thing altogether.