Yesterday T-Mobile begin the roll out of Windows 10 Mobile upgrade for Lumia 640 devices in Poland. Today, Bouygues Telecom confirmed in their official Twitter handler regarding when their Windows Phone 8.1 devices getting Windows 10 Mobile update.
https://twitter.com/bouyguestelecom/status/687601306383552512
https://twitter.com/bouyguestelecom/status/687601652866625537
Bouygues Telecom will begin Windows 10 Mobile roll out for Lumia 635 -Lumia 640 -Lumia 640XL -Lumia 730 -Lumia 735 -Lumia 830 -Lumia 930 -Lumia 1520 -Lumia 532/535/540/636/638 starting next week in France. However, the company did not provide any exact date regarding when they will begin the roll out of Windows 10 Mobile update.
Via: Neowin