As comments from genuine users confirm, it seems T-Mobile Poland has mis-communicated that Roll-out has begun. Lumia 640 XL in Poland hasn’t received Windows 10 Mobile update and even the carrier has pulled the source page.
Microsoft is very close to releasing Windows 10 Mobile update to older Lumia devices running on Windows Phone 8.1. If you don’t know Windows 10 Mobile adds number of new features and improvements over Windows Phone 8.1
Now, T-Mobile begins the roll out of Windows 10 Mobile update for Lumia 640 devices in Poland. The update pushes software version to 02177.00000.15184.36002 and the update will not be available for all devices at once.
You can read what features and changes Windows 10 Mobile brings with itself by clicking here. Click here to read our detailed tutorial on how to prepare your Windows Phone 8.1 devices for Windows 10 Mobile update. You can read all our Windows 10 Mobile tutorials by clicking here.