"Encore." has to be the best track on the new album. Encore/Numb By Jay Z + Linkin Park Sounds pretty good too.

hasn't he retired yet?

jay z is going to be new CEO/president of Def Jam and/or Universal, so he certainly doesnt need to put out anything else. He wants to put out something under his real name shawn carter.
whats funny is, i always thought throughout the jayz vs. nas feud that nas was the better rapper- hands down. but i guess jayz got the last laugh...in a really big way