That's why I suggested on another thread that the 925 and other devices should be included.
The upgrade is opt-in for those getting it through the official channel, and as we have seen from these forums performance has varied wildly for some users on the same device and build. Apart from poor battery life early on, my 925 has been and remains rock solid. I would choose to opt-in, but some might not due to having had issues.
If the announcement had been that x2x users were officially getting 10586.164 (if they want it) but won't get redstone or any builds beyond 10586 I think there would be a lot less resentment than there has been, as the choice we thought we had to upgrade has been talen away.
I'll be sticking with the insider build I have now, and any further that I might get BTW, I'm not abandoning W10M as some have said. I'm just saying that I can understand why some people on x2x devices are not happy right now.