Well, the plan was to try and clear my todo list by Christmas. I've lost two months on that on account of Real Life. Add in some extra for me getting back up to speed on embedded Lua and all the rest of it, and I reckon we're looking at the end of March 2011. Probably.
Of course, we may get an interim release in before that. The Lua code would be worth a release on its own, for instance. But don't ask me for timescale right now, because right now I haven't a clue.