Why? If they're going to air the whole show on TV why would they then release a DVD of it? I don't see what is special about Milton Keynes at all, it's not even that good of a show honestly, it's just like all the others except it had two LPJZ songs just like MSG had. If they're going to release a live DVD they should do a show from PR08, that way it would have proshots of SDC with LP, Chris with LP and possibly WMI if they chose a show from early in the tour.
I beg to differ. I doubt LP are releasing a live DVD, especially a SECOND live DVD featuring Jay-Z, but it could absolutely be done, even if it's aired on TV. Channels like HDnet and Palladia (formerly MTV-HD) show full concerts that are available on DVD all the time. Also, it would make more sense to release a performance featuring Jay-Z than SDC or Cornell, who are both unknown by the mainstream fan. Same even goes for Busta, to an extent, who was off the radar for a lonnnnnnng time before he collaborated with LP.
So, yeah. A DVD release could happen, and would definitely fill the gap between touring and the new album coming out.