According to PWInsider.com, word backstage in WWE is there is growing concern that Alberto Del Rio will not be re-signing with WWE when his contract expires.
The cause for concern is a combination of several things. Del Rio has openly talked about retirement coming sooner for him rather than later, he's getting older, he's had tremendous success in Mexico, and he's been frustrated lately as he's gone from being a top guy on Smackdown to now being fed to Batista.
As of now, there is no word as to whether or not Del Rio is working on a new deal with WWE, but following Raw this week there is at least concern in WWE that he might opt to leave when his current deal runs out.