I'll answer this with the response I got from the Mailing List (the answer is "not yet"):
WebRTC will (hopefully) land in Firefox OS 1.2 (as reference, the initial launch is on 1.0.1, closely followed but dependent on carriers is 1.1). WebRTC is a of lot of low-level hardware dependencies, so it might take longer.
You can follow along on this meta bug and its dependencies: https://bugzilla.mozilla.org/show_bug.cgi?id=750011
Thanks for the answer, Mozilla, can't wait for 1.2!