Just in case you missed this one, Microsoft released documentation and an ADM template for the Microsoft Lync 2010 client. The following settings can be configured.
Specify transport and server
Enable strict DNS naming for server name
Configure SIP security mode
Configure SIP compression mode
Prevent users from running Microsoft Lync
Allow storage of user passwords
Require logon credentials
Disable HTTP fallback for SIP connection
Disable server version check
Additional server versions supported
Enable using BITS to download Address Book Service files
Help Menu
Launch Microsoft Lync First Run
Turn on tracing for Lync
Download documentation and the ADM template from here
Oh and yes, just in case someone from Microsoft reads this post, what about providing the templates in the latest and greatest ADMX / ADML format instead of just the ADM format?