Is there a single point-of-reference that lists the release dates for the Live Communications Server (and other related client/server applications) [closed]
Solution 1:
Microsoft publishes this information on their Support Lifecycle page.
https://docs.microsoft.com/en-us/lifecycle/products/?terms=Live%20Communications%20Server
https://docs.microsoft.com/en-us/lifecycle/products/?terms=Office%20Communicator
https://docs.microsoft.com/en-us/lifecycle/products/?terms=Lync
https://docs.microsoft.com/en-us/lifecycle/products/?terms=Skype%20for%20Business