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