I'm pretty sure the shared applications it's referring to there are UWP apps, which use a different set of APIs to traditional Win32 apps that are only available on full Windows versions. I looked into how Edge works a bit more, and it sounds like Microsoft made a special translation layer to take Edge's Win32 API calls and turn them into UWP ones. I guess games would be possible to run like this too?
While railguns are known for rapidly accelerating projectiles to hypersonic speeds over the short length of a gun barrel, there's no limit on how slowly they can accelerate something or how long the "rail" part of the railgun can be. Accelerating "slowly" over a long distance is totally possible!
That seems like a bit of a stretch to me. If they felt the need to change the title, they would have done that before this reveal considering the war has been ongoing for 2 years now.
I'm not even sure, the chain of crafting I had to go through was so long I couldn't tell you what I did. I gave it another go later on and only managed to create "Mario Kart 8 Deluxe Booster Course Pass". To make things more difficult, results that are too long can't be combined with anything else, so you have to create those long results all at once from very specific shorter ingredient words.
Game suspension in sleep mode is the big one. I don't know how, but it seems like they've perfected a way to suspend any game when the system goes to sleep and then pick right back up where you left off when you wake it again without any hitches. It works just like the Switch or any other handheld, except it's a PC and it's doing it with games that aren't made to be suspended like that.