Beginning around two weeks ago, Microsoft started to push out a significant firmware update for the new Lumia 950 and Lumia 950 XL. Being the first for this device as an over-the-air update, Microsoft is collecting telemetry on the update to ensure that there are no issues. This process is, at least, one of the reasons for the rolling nature of the update and why not all devices are currently getting it.

In the US, the unlocked dual-SIM Lumia 950 XL began getting this update on Wednesday. However, once again, there are discrepancies as not everyone sees the upgrade (including our phones). The explanation here, however, is different.

If you are on the Insider Program for phone and build 10586.36 you will not get the update, at least not yet. An option is to unregister from the program, back up the device, hard-reset and then get the update, but for most people that is not exactly a convenient option.

Source: ANDRIOD CENTRAL