April 14, 2012 Dear K-theory Preprint Archive users, Submissions to the K-theory Preprint Archives have slown down substantially, so we have decided to stop accepting new preprints. We will keep the archives open for reading on the web and for downloading by ftp, and we will keep the K-theory Calendar going (please continue to send K-theory conference announcements to Dan). Notices from organizers about conferences and events will continue to be sent to the mailing list. Greg Kuperberg, who is associated with the arXiv, has offered to help arrange for hosting the preprints in perpetuity at http://arxiv.org, eventually. We appreciate the offer, which will involve substantial work. Send email to him at Greg Kuperberg if you prefer your preprint not to be replicated there. We encourage you to submit future K-theory preprints to the arXiv, as many of you have done. Greg's "Front" for the arXiv has made it easy for readers to be notified of new submissions in K-theory, via the RSS feed at http://front.math.ucdavis.edu/atom/math.KT , which can be easily tracked with Google Reader, for example. Dan Grayson Rick Jardine