First, Gabrielle Burton's Impatient With Desire, a novel about Tamzene Donner, has been out for a couple of weeks now. It's a quick, enjoyable read and I'm glad to say that the reviews I've seen are positive.
Second, I've been reading Will Bagley's So Rugged and Mountainous, a history of the overland trails from 1812-1848, and it's great. For Donner Party fans, the general information about the overland experience -- background, wagons, draft animals, routes, and so on -- places the DP squarely in its historical context, and Will uses recently discovered and lesser known sources to impart freshness to his Donner coverage.
Third, the Alder Creek archaeology book (working title: The Archaeology of Desperation) is moving along. It's nearing (note I said nearing) the final stages of editing -- with over a dozen contributors and such a technical subject, these things take time -- and hopefully will go to press late this year.