Tor/Forge, part of the Macmillan empire announced that they will start shipping their ebooks without DRM starting in July. This is the beginning of the DRM death spiral predicted by Charlie Stross (although he has tempered that prediction a bit in his analysis of Tor's announcement).
John Scalzi weighns in with his own thoughts and an announcement that his forthcoming novel, Redshirts, will be DRM-free even though it will be released in June. Like Stross, he views this as a positive move.
I am hopeful that this action will trigger the collapse of DRM in the publishing industry. Once the publishers see that the earth continues to orbit the sun even without DRM, I expect that they will all jump on the bandwagon.