Microsoft Skype for Business for iOS

 Microsoft has released Microsoft Skype for Business for iOS, v6.27.1.6
Download from here

Microsoft Skype for Business Server 2015: November 2020

Microsoft released Skype for Business Server 2015, v6.0.9319.598
See description in KB3061064 and download from here

Microsoft Skype for Business for iOS

Microsoft has released Microsoft Skype for Business for iOS, v6.27.0.1
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Microsoft Skype for Business Server 2019: September 2020

Microsoft released Skype for Business Server 2019, v7.0.2046.244
See description in KB4470124 and download from here

Microsoft Skype for Business Server 2019: July 2020

Microsoft released Skype for Business Server 2019, v7.0.2046.236
See description in KB4470124 and download from here

Microsoft Skype for Business Server 2015: July 2020

Microsoft released Skype for Business Server 2015, v6.0.9319.591
See description in KB3061064 and download from here

Skype for Business Server 2019, Stress and Performance Tool

Microsoft released Skype for Business Server 2019, Stress and Performance Tool v7.0.2436.33
Download from here

Microsoft Skype for Business Server 2015: May 2020

Microsoft released Skype for Business Server 2015, v6.0.9319.580
See description in KB3061064 and download from here

Microsoft Skype for Business Server 2019: March 2020

Microsoft released Skype for Business Server 2019, v7.0.2046.216
See description in KB4470124 and download from here

Microsoft Skype for Business for iOS

Microsoft has released Microsoft Skype for Business for iOS, v6.26.2.0009
Download from here