So this build will be the RTM one? If yes, why it will officially released only for some phones and then for others? If its the same for everyone, whats the point?
But the build is the same, isnt it?
Thats clear. So maybe is better wait the proper build than updating with insider.An "update" has 2 parts : the OS part, which is similar to what we received as Insiders, and the FW (the drivers, to use a caricature).
The OS will be the same for all.
The FW will be different, one for each model (Lumia 640), or even variant (French unbranded Lumia 640). The FW contains many parts :
a) RF ROM, which controls the cellular part. Between a US 640 and and EU one, this part will differ as used bands are not the same,
b) "drivers", for the camera for instance. This part will be radically different for a 1020 and a 535
Plus, there's a difference between : a 950 being "born" with W10M, and all the existing Lumias (and other WP) which will have to manage an OTA upgrade without data loss. You can see the difference between installing an insider build on a hard reset device. They can't impose that to normobs: the upgrade will have to work directly, without drawbacks. This may explain the delay also for being able to deliver W10M to all.
So this build will be the RTM one? If yes, why it will officially released only for some phones and then for others? If its the same for everyone, whats the point?