In an interview with GamesRadar, Stephens commented on Project Scorpio and developing for it.

"We've found nothing false about their claims about the hardware. As far as we can tell, it will be the most powerful console ever created when it launches - unless somebody has an announcement I don't know about."

Stephens went on to comment on the Xbox team altogether:

"I can't speak for Microsoft, but from our point of view they seem very committed to, you know, if you buy an Xbox One, whether it's a One, or an S, or a Scorpio you're going to buy a game and [be able to] play it on any of them. That seems very consistent with our experience of working on those platforms." 

In the gameplay video for Shadow of War, it became very clear that Microsoft is in charge of the game's marketing, something they confirmed recently. It will be interesting to see whether we get to see Shadow of War playing on Project Scorpio this E3.

http://www.gamezone.com/news/middle-earth-shadow-of-war-says-xbox-s-project-scorpio-is-everything-they-promised-3451547

Looking foward to seeing Microsoft showing this game running on Project Scorpio.

The first game, Middle-earth: Shadow of Mordor runs Native 4k on the PS4pro.

Hopefully the same is true for the sequel "Shadow of War" ?
Anyways looking forwards to seeing Digital Foundrys compairison of PS4pro & Scorpio.

Great news, I am really excited to see the game plan for Scoprio. E3 is going to be very exciting this year. Hopefully we see a few MGS games running on Scorpio as well.

It is good to hear at the developer level, Microsoft is making a clear message, that this is part of the Xbox One Platform. I absolutely love this new OS based generation. Hope this is the norm going forward, and we see new consoles at every die shrink, with new OS generations every decade or so.