No updates, no support from Samsung.. I haven't got any hope left we're ever going to be seeing Windows 10 on it. Maybe unofficial, but certainly not official.
Do you (or anyone else) have any comments on Microsoft's official support for upgrade of Samsung Ativ S to Windows 10, based on the contents of the "WP 8.1 to 10 Device Upgrade Eligibility List" published by Microsoft.
I'm blocked from including links in this post, but the file is located at the following URL (replace "<dot>" with "." and "<slash> with "/"):
www<dot>microsoft<dot>com<slash>en-gb<slash>download<slash>details.aspx?id=49182
Samsung Ativ S is mentioned in the XML file, but it's unclear what the deviceUpgradeState values of "2", "3", "4", etc. actually mean.
Here are the entries that mention Samsung Ativ S, which are all assigned deviceUpgradeState of "3":
<deviceUpgradeState deviceID="000-88-SGH-T899M" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="BEL-CA-SGH-T899M" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="MTS-CA-SGH-T899M" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="ROG-CA-SGH-T899M" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="SAT-CA-SGH-T899M" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="LUS-CA-SGH-T899M" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="FID-CA-SGH-T899M" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-00-SGH-T899M" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-33-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-88-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-AT-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-AU-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-BR-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-CH-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-DE-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-FR-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="GLO-PH-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-SE-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="SMA-PH-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="TMO-NL-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="SIN-AU-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="EPL-DE-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-MY-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="SWI-CH-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-ID-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-PL-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="SUN-PH-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-GB-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-GR-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-IT-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-SG-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-IN-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="TMO-DE-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="TMO-AT-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-VN-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="ENT-CL-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-ID-I8750DXALL1" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-IN-I8750DDALL1" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="MOV-PE-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-HK-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-CN-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-TW-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="IT3-IT-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="CLA-CL-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="TEL-NZ-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="CLA-PA-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="O2O-IE-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="FON-ES-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="O2O-GB-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="VIV-BG-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="EAD-BG-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="ORG-IL-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="PCL-IL-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="ORG-SK-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-HU-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-CZ-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-IL-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-RO-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-RU-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-SI-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-LV-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-BE-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-NL-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-TH-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="DE2-NZ-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="TIM-IT-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="VOD-ZA-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>
<deviceUpgradeState deviceID="000-PT-GT-I8750" deviceName="ATIV S">3</deviceUpgradeState>