It has been an on and off situation over the last several weeks, but it appears Microsoft has made a final decision about the end of support for their classic Skype software.
This one blog post from the Skype team was originally posted on July 16 and stated that the classic version of Skype, aka Skype Version 7, would shut down on September 1, 2018.
Then, six weeks later, on August 31, 2018, they updated the blog post for the first time and stated they would keep classic Skype working for a limited time based on customer feedback. There were no specifics given beyond that vague time reference — for all we knew, “limited time” could include the few hours between August 31 and September 1.
Last week, during Microsoft Ignite on September 27, 2018, they updated the blog post for the third time with the new end of life dates for classic Skype. Desktop versions will stop being supported on November 1, 2018, and mobile/tablet versions will see the end of support two weeks later on November 15, 2018.
They do add a caveat that classic Skype (Version 7 and below) might continue to work past those dates but they encourage users to upgrade to Skype (Version 8) to get the latest features and full support.