I have been accepted to the preview, I will let you know what I think.
I bought the elite controller 2 which has Bluetooth so I can use this with my phone and I guess I can miracast it from my adroid phone to me tv ;-)
It's pretty good if you have amazing internet
I have this installed and you get quite a good collection of games. I synced my xbox controller with my Android phone (Google Pixel 2XL) and I thought the graphics were really good.
Then my eyes started to hurt and I gave up. Not sure mobile screens are ideal for pro gaming.