Almost exactly three years ago (October 23, 2007, to be precise),
whswhs got in touch with me about collaborating on the new edition of
GURPS Low-Tech. Today, it's out in PDF. It's a long time coming, but not so long as it took for the technologies it contains to develop.
(In case anyone's interested, I was responsible for chapters 2 and 3, though all of us contributed in ways large or small to other people's chapters.)
Next up, in the fullness of time, the hardback version and the three companions.