Electronics Gaming Magazine has released an online "sample" of their magazine that features New Vegas. There's three pages and not much new information, but it does show some concept art of Raul in three different armor sets.
Apparently depending on your S.P.E.C.I.A.L. stats selections, Doc Mitchell will comment on them. If you choose a high strength he'll remark "I'm surprised that anyone would mess with you...you could kill a Deathclaw with a switch".