Cubicle 7 TV presents part one of a two part interview with Dominic McDowall-Thomas about his work on The One Ring, and a little bit about the game:

http://www.youtube.com/watch?v=hXsnJx56_mI

Part two went live over the weekend:
http://www.youtube.com/watch?v=7v7kRlnCI6E

Stated in this interview, and which I hadn't read anywhere else yet:

Set Two, Aug 2012: ‘The Errantries of the King’(provisionally), essentially covering Aragorn’s road to the Crown of Gondor.

Set Three, Aug 2013(?): on The War of the Ring

"In between those we’ll have lots of supplements. The initial range includes a GM’s screen with a booklet about Laketown (presumably including the gigantic map Jon Hodgson’s said he’s working on --Os.). Then we’ll be moving onto an adventure anthology, and a campaign set of The Darkening of Mirkwood. And there’s quite of lot of other cool stuff planned as well."

Cheers,
--Os.