How do I get WM10 if I get a Lumia 640 on T-Mobile?

[Windows Central Question]

I'm thinking of getting Lumia 640s to replace iPhone 5c's for the family. When WM10 is released later, will T-Mobile push the release out through a phone update or will I need to do something else? Thanks!

 

[Nicholas Ek]

I'm thinking of getting Lumia 640s to replace iPhone 5c's for the family. When WM10 is released later, will T-Mobile push the release out through a phone update or will I need to do something else? Thanks!

Even if T-Mobile does not push Windows 10 to the 640, you can still get it (Insider Program). Though I don't think the 640 will be left behind.

 

[Tumultus]

Even if T-Mobile does not push Windows 10 to the 640, you can still get it (Insider Program). Though I don't think the 640 will be left behind.

Well, you never know! T-Mobile has a tendency to dump Windows devices a few months after they put them out. L810, L635, HTC 8X ...

 

[mark233]

Well, you never know! T-Mobile has a tendency to dump Windows devices a few months after they put them out. L810, L635, HTC 8X ...

... and the HTC One M8

 

[xandros9]

don't forget the dropping of the 640 sales entirely

online, T-Mobile has zero Windows Phones for sale it appears.