I don't know exactly when, but it sounds like some mirrorless FF competition is coming. Here's the Pentax whispers, and we've seen similar from Sony, too. My guess is not inside 2 years, though. Maybe we see a prototype in a year??
Pentax confirms (again) that they are working on a Full Frame camera. | Mirrorless Rumors which links back to the below:
Tokina Confirms Pentax Full-frame Under Development - Pentax Camera News & Rumors - PentaxForums.com