Looks like it...
Amazon US have let slip that a couple of big titles are on the way to backward compatibility on Xbox One.
The retailer allows users to preorder digital codes now, and that includes Xbox 360 titles. When a game is backward compatible, the card artwork provided by Microsoft shows "Full Game Download - Plays on Xbox One" as opposed to just "Full Game Download."
Two titles with such artwork have shown up on Amazon in the last day or so. EA's reboot of the SSX franchise is one, and Halo 3: ODST Campaign Edition is the other. SSX is listed for launch on June 14th, with ODST arriving a week before on the 7th.
We'll keep our ear to the ground, but it looks like at the latest, you'll be able to hit the slopes or get your orbital drop on in June.