The name is not decided yet. The titlebar literally says "Cafe". I can post another screenshot with titlebar + FPS counter if you want. To answer your second question, it will most likely be released here on gbatemp first. It's developed by a closed team (of which I am a part), therefore there isn't any other source than my posts atm.
Yes, it's coming out of nowhere. Yes, it seems somewhat too early for an emulator. Yes, screenshots don't prove anything. If you don't believe, just wait some time and we'll see.
Thats not how it works. There are SNES emulators which
require at least 3GHz to run smoothly. If I went by your logic, that would mean N64 and anything above can not be emulated currently. Wii U works differently enough that a lot of the slow stuff can be optimized away (at cost of accuracy, of course). Also, who says we will see playable speeds? 5 FPS emulation is still emulation.