I'm still hoping Disney is going to feed the OOT to the Ep VII hype machine, and the way they've been handling Star Wars makes it a fairly likely scenario. This December, maybe? Fingers crossed, but no real expectations.
If there was ever a time to release the OOT, it would be next year leading up to Episode 7 as you will have Ford, Fisher and Hamill doing a zillion interviews about the new movie. Perfect Tie-In for the fans.