Unconfirmed: Bethesda and inXile Collaborating on New Title

Rumors have been circulating for some time that Brian Fargo's inXile Entertainment has been hard at work on a Wasteland sequel, but now Duck and Cover claims to have word straight from the former Interplay CEO that he's on a press tour promoting "our game that we are doing for Bethesda that has been under wraps for a couple years."
After some investigating, DAC has discovered that Fargo is currently still on his press tour of Europe, leaving for Paris this morning. When asked what he is promoting on the tour, he responded:

"My Chippendales calendar ;) actually our game that we are doing for Bethesda that has been under wraps for a couple years." 18 Feb 2010

It is unknown at this time whether or not Fargo was being serious or just making a joke. Attempts were made to contact both inXile and Bethesda, but no response has been made as of yet.
Could Bethesda be directly involved with the Wasteland series now, too? Or is this just some sort of publishing deal in the works? Only time will tell.