How would we know if Em was going to retire anyway? Every Em album has tracks saying "guess who's back" and other tracks saying "fuck this game, im outtie", I guess it would have to be in an interview or something to be official.
Sportsman and music artists always say they're going to retire, have a short break then pump out a bit more though so who knows.
I think he probably has 3 solo albums left in him too if his work rate stays constant though it depends on how this album is received.
Off topic: Do you think Royce will be on the album?