Blizzard have just taken the Beta server down to deploy a new patch. No doubt this will introduce the Currency-based AH that they spoke of earlier, but being a patch it should also have some more changes.
[blue] We’re currently performing maintenance on the Diablo III test server to deploy the next beta patch. We anticipate the downtime to last approximately 5 hours until 7:00 p.m. PST. [/blue]
As for patch notes, they are coming soon:
[blue] Beta patch 7 notes coming soon! [/blue]
Check back later to read them.