He just updated his Facebook page to share the news:
“Well friends, after five incredible years, I’ve decided to take my next steps and bid farewell to my amazing MTV family. My time at MTV has changed my life in ways I never imagined. That is due, in large part, to all of your support. I can’t tell you how much I appreciate it. It’s not goodbye, it’s just a new hello. See you sooner than you may think! In the meantime, we’ll always have fb and twitter to keep us warm!”