Following the bread crumbs, this rumor makes sense with something that was mentioned at the WWE Network launch at CES.
They listed all of the devices the WWE Network would be available on, and then the executive said and one more device which we cant mention at this time. She then pointed at a member of the press in the crowd and said Someones getting it.
After the event, it was revealed that all of the press kits under the seats contained a WWE branded AppleTV.
https://twitter.com/saschasegan/status/421117388235358208/photo/1
Either the WWE Network will be an app added to the AppleTV, or it will be available in the new AppleTV App store, which they obviously wouldn't be allowed to mention until after Apple announces it. Wrestlemania 30 takes place on April 6, so if an App store was launched for the Apple TV in March, it would be right in time for that event. I don't think Apple would really care about hitting that date, but it would be a big deal for WWE to be one of the first apps in the store for their biggest event of the year.