If you own a Lumia 950, 950 or the recently released Lumia 550. You can now enroll in the Windows 1nsider program to get the latest Windows 10 builds (which is currently 10586.29).
The WPRT (Windows Phone Recovery Tool) has also been updated to support these new Lumia devices.
If you own a Lumia 950, then let me know? Are you planning on updating?