Microsoft had originally planned to begin its Windows 10 Mobile rollout to existing handsets in December - but last month, it revealed that the update would not be made available until early this year. Microsoft still hasn't officially announced a date for the rollout to begin - but one European carrier has now published details of the imminent update.
As WMPU reports, T-Mobile Germany has listed six Lumia handsets - the 535, 635, 640 LTE, 640 XL, 830 and 930 - that originally shipped with Windows Phone 8.1, which are in line for the Windows 10 Mobile update.
Along with the Lumia 950 - which originally shipped with build 10586 of the OS - all of these devices are in line to get a carrier-approved upgrade to Windows 10 Mobile build 10.0.10586.29, along with revised firmware:
Microsoft Lumia 950 01078.00027.15506.02027 Windows 10 mobile build 10.0.10586.29
Nokia Lumia 930 02540.00019.15234.50007 Windows 10 mobile build 10.0.10586.29
Nokia Lumia 635 02040.00021.15235.50002 Windows 10 mobile build 10.0.10586.29
Microsoft Lumia 535 02074.00000.15234.28001 Windows 10 mobile build 10.0.10586.29
Nokia Lumia 830 02177.00000.15184.36004 Windows 10 mobile build 10.0.10586.29
Microsoft Lumia 640 XL LTE 02177.00000.15184.36001 Windows 10 mobile build 10.0.10586.29
Microsoft Lumia 640 LTE 02177.00000.15184.36002 Windows 10 mobile build 10.0.10586.29
It's not yet clear if the updates have actually begun rolling out yet - the list of updates was published on January 4, but the support page also states (machine translation):
It can take up to 2 weeks until the manufacturer provides the update on its servers. Updates are released at the beginning in spurts so that the servers are not overloaded.
That certainly implies that the start of the rollout - at least to some handsets - is now imminent, if it hasn't begun already, although it may take a while longer before all eligible devices from the carrier receive the notification to upgrade.
Once upgraded to Windows 10 Mobile, devices should be able to receive most (but not quite all) future updates direct from Microsoft without carrier interference.