I just stumbled upon a very interesting link on support.office.com that highlights all of the features that have shipped in Skype for Business client and that is both for the Desktop client on Windows and Mac all on the same page. I did not know about this page and decided to share it with you.
Click on “Windows” to see the Windows updates
Click on “Mac” to see the updates on Mac
This is a screen shot of the latest updates on windows
And very handy is that all the way below on the page you will see all previous updates
Now you don’t have to go look what has been updated, it’s available right here, enjoy