According to WWWT (3WT) radio in Washington D.C., the Oakland A's have come to terms on a contract with DH Frank Thomas. Details are unconfirmed, and I'm not sure how reliable the Nationals radio announcers are, but we'll have more information as it becomes available.

Update

Yahoo Sports via Rotoworld is also reporting that Thomas is set to sign with the A's. Sounds like more evidence that the deal is at least close.