If you live in Poland, own a Lumia 640 and connect to T-Mobile in that country, you may soon be getting an update to Windows 10 Mobile. A new report claims that the carrier has started over-the-air updates for that phone, in the first reported instance of such updates for older Windows Phones that are not part of the Windows Insider program.
The T-Mobile support page indicates that the update takes the Lumia 640 up to software version 02177.00000.15184.36002. It adds that the update is being released in batches so not every Lumia 640 owner will get the update at the same time. We have not yet received independent confirmation that this update is actually being pushed out, nor any word on when this download will be available on other devices outside of Poland.
Thanks to everyone for the tips!