The enterprise library workspace on gotdotnet.com have release documentation for 3 existing and 2 new application blocks. It's up for review and comment now.

The blocks are:
Caching (existing)
Logging & Instrumentation(existing)
Security(existing)
Data access(new)
Exception Handling(new)

At first I thought “but I've used the data access one before” but it seems they are being rewritten

Get it here under the releases section at the bottom right of the page