There’s an embedded image of an iPhone 5S motherboard as well. Don’t bother clicking through; it’s fake. The character alignment is wrong, the strokes of the 7 vary slightly in the middle and — conveniently — the watermark covers the identifying QR code.
In regards to the other details quoted above, it just seems like educated guesswork. Reporting Siri will “do a lot of new cool stuff” is ridiculously vague and, due to the fake header image, you can’t put any weight behind the supposed processor information. I would expect the “scoop” came from the same source who provided the motherboard photo.