An important message was posted last week in the Admin center. Microsoft will retire the classic Skype for Business admin center. Starting December 1st, organizations will no longer be able to access the old admin center. Instead, organizations need to manage their users through the Teams Admin center.
There is no change in the Skype for Business PowerShell module or Call quality dashboard, but as I mentioned here on the blog last recently, all of the SFBO commands have now been implemented in the Teams PowerShell module as well.