Since full disclosure of all features and functionality of Communications Server Wave 14 I thought it useful to consolidate a few links where you can start your learning:

http://nexthop.info/ where you’ll find whitepapers and other useful discussions

http://www.msteched.com/Tracks/UnifiedCommunications download the sessions and PPTX from the TechED US

http://www.microsoft.com/communicationsserver/cs14/en/us/new-features.aspx Marketing site discussing the new features.