Microsoft Skype for Business for IOS

Microsoft has released Microsoft Skype for Business for iOS, v6.1.304
Download from here

Microsoft Skype for Business Server 2015: November 2015

Microsoft released Skype for Business Server 2015, v6.0.9319.102
See description in KB3061064 and download from here

Microsoft Skype for Business for IOS

Microsoft has released Microsoft Lync 2013 for iPhone, v6.0
Download from here

Microsoft Lync 2013 / Skype for Business 2015: October 13, 2015

Microsoft released Lync 2013 / Skype for Business 2015, v15.0.4763.1001
See description in KB3085581 and download from here x86 or x64

Updates for Microsoft Office Web Apps Server 2013: October 13, 2015

Microsoft released an update for Microsoft Office Web Apps Server 2013
See description in KB3085571 and download from here

Microsoft Skype for Business Server 2015: September 2015

Microsoft released Skype for Business Server 2015, v6.0.9319.88
See description in KB3061064 and download from here

Updates for Lync Server 2013: September 2015

Microsoft released Lync Server 2013, v5.0.8308.933
See description in KB2809243 and download from here