Yes we do know about DPP it was called "In season Progresson on Madden04&05"Every 4 weeks your players will progress based on what they did in there games during those 4 weeks.
From my games last few days:
I am a run heavy team so my RB(running back),OL,WR all progress postively.OL&WR there RB(run blocking)went up big.OL & WR ST went up to.
My QB AWR & THA went down because I thrown 3 ints.everything else look the same.So fa my QB is 17/35 250yards passing and 1TD pass & 3ints.
Now starting after the progressive week the QB has the color blue on THA & AWR.