Well he was a little too out of it for FOX's Mon-Fri program schedule. I also think it maybe was for health reasons. I know Beck had mentioned a while back he may lose his eyesight. The articles do state he will do some side work for FOX.
I'm a HYOOGE fan of Cena's, but I think they should have waited another year or so before releasing a DVD on him. Plus, it's gonna have some HYOOOOOOOOOOOGE acts to follow in the Shawn Michaels, Ric Flair, Mick Foley, and Monday Night War DVDs.