Windows 10X on the venerable Lumia 950 XL?
(All About Windows Phone)

Now, don`t get too excited. After all, the whole Windows 10 on ARM on the 950 XL project did kind of run into a brick wall in terms of having zero support for the PureView camera. And I suspect we`ll see much the same here, but... Windows 10X is the stripped back, streamlined, future of Windows and here it is being ported semi-successfully to the 950 XL, the phone that refuses to die!