I'm surprise that you haven't reported on last night's update to 10.0.15254.490. My Microsoft Lumia 950 XL received the update late last evening. I had to manually restart the phone this morning. The only difference I've spotted so far is that the Microsoft Store app won't open after trying for a couple of seconds to load. That's rather annoying, as the phone receives frequent updates for a number of apps, including Microsoft's. I'm especially looking forward to the next To-Do update that includes the IMPORTANT star.