Assuming he follows form, he'll release a color corrected (and hopefully minimally restored, as in Lapti Nek and Sebastian Shaw ghost) AVCHD of ROTJ either very near or just after the completion of ESB:R, since he did the ESB AVCHD near the end of ANH:R gearing up for ESB:R.
Beyond that, I'm sure he's making notes for ROTJ:R as ideas hit him but won't say much until work officially begins on it.