E' stata rilasciata la Beta 2 del Service Pack 1 di Exchange Server 2007, ecco le novità:

SCR ready for Production use.

OWA
  New OWA themes (X-Box, Zune)
  Supporting digital signatures with certificate that do not have email addresses in them for S/MIME

S/MIME features which were not complete in Beta 1:
  HTML filtering (now S/MIME message reading and editing is full fidelity)
  OWA Printing
  Admin settings
  Both the new task and the updated MOM pack have been checked into the Beta 2 branch.
  Integration with anti-junk/phishing mail features
  Many bug fixes (in all features, not just S/MIME)
  Exchange Web Services HTTP Proxy and new Web Services ID’s.

New EMC features for Beta 2:
  Full Access permission management for mailboxes and mail-enabled public folders
  Preview of AL/EAP/DL with custom filter
  More ActiveSync policy settings

Other
  Both the new task and the updated MOM pack have been checked into the Beta 2 branch.
  Inter-Site Message Size Restrictions feature enable.
  Test-ReplicationHealth is a new task that MOM pack uses to monitor HA replication.
  MRM now supports policies on the message type "e-mail" in addition to other types of items (calendar, notes, etc).

La build è disponibile per gli abbonati MSDN e TechNet.