I’ve long stopped blogging Lync 2010 client versions, but I recently had cause to go for a bit of a search, and there were some I encountered in the wild that I’d not previously documented here.
Here are a few more versions and some links. This isn’t a comprehensive list, but is intended to augment those that will be revealed if you use the Search function on the blog.
As best I can tell, 4.0.7577.4540 from Sept 2017 remains the last update to this long-obsolete client.
4.0.7577.4540 Sept 2017 – Security Update
4.0.7577.4534 June 2017
4.0.7577.4525 March 2017
4.0.7577.4486 Dec 2015
4.0.7577.4415 Dec 2013 – Security Update
18th March 2020.