It's apparent how much they change every year by those who do still play them, this argument generally pops up in every thread about football games I've ever seen - by the people who don't play it.
There have certainly been some versions with fewer upgrades than others, but over the last several years I haven't had much to complain about features-wise other than the bare bones Madden 06 for the 360 which had none.
There are even videos EA put out this year comparing the differences, because to the uninitiated, what more could possibly be added?
Got it today, like what I've seen so far, but not going to pass judgment till I've had some time to play it.