The following Lumia smartphones will receive a free upgrade when
available: Lumia 430, Lumia 435, Lumia 532, Lumia 535, Lumia 540,
Lumia 640, Lumia 640 XL, Lumia 735, Lumia 830, and Lumia 930.
https://www.microsoft.com/en/mobile/windows10/
不意外
别忘了其他机型还是可以透过 Insider 版本来更新 XD
只是正式版首发是以上机型而已