WWE.com has posted an article detailing an announcement coming Monday at 12pm EST:

"Something big is coming to WWE.com. Log on this Monday at 12 p.m. ET for a special announcement, streamed live on WWE.com, YouTube.com/WWE and Facebook.com/WWE.

Tune in the day after WWE Elimination Chamber for a special address by WWE Chairman Mr. McMahon, WWE COO Triple H, WWE Executive Vice President Stephanie McMahon, WWE Champion The Rock and John Cena."

There are no solid reports on what the announcement will be about, but speculation points to it being about the location for Wrestlemania 30.