Update: It's not entirely clear if this update is rolling out to non-Insiders, or just Insiders who were stuck on 10586.0 and who could not get 10586.29 and 10586.36. For at least the latter group, they should now be getting the update. It is less clear for those who are non-Insiders if they are getting 10586.29 or not.
It appears as though Windows 10 Mobile Build 10586.36 is headed out to non-Insider Lumia 950 and 950 XL phones now. The same build was sent out to both the Fast and Slow ring recently, and now it appears to be hitting phones that aren't enrolled in the Insider Program. This build will be the final release of 2015, and it brings a few fixes and improvements to the phones.
If you've got a Lumia 950 or Lumia 950 XL, and have yet to receive the update previously, you should check again for the update. Once updated, be sure to hit the comments and let us know your thoughts.
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Thanks to everyone who sent this in!