Source: WWE.COM

“In accordance with its Substance Abuse and Drug Testing Policy, WWE has suspended John Cena for 30 days, for his first violation of the company’s policy.”

http://wwe.com/inside/news/4392824/

Side note: Looks like they may pull a swerve and just have Big Show vs. Edge afterall. I wonder how they will pull this off at WrestleMania.