The word this week is that on Friday there should be a set of new application blocks released on the MSDN patterns and practices site. We can expect a new Data Access and Logging block, as well as a Cryptography block, and a few other treats. Sounds like a pretty good pack of reusable blocks, so I for one will be keeping my eye on MSDN tomorrow.
[update:] The new blocks are now online at this url: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnpag2/html/entlib.asp