Is it necessarily wrong? I looked at it for a second too long before clicking... and while I'm sure it's a typo, I think it does work out if you understand it to mean "contains everything, including the A4"
Yes, but acceptance of obvious typos won't do anything to raise net culture's writing skills standards.
Given that it's so clear that "reveals everything" was intended, yes. It's generous of you to stretch the meaning to accomodate the mistake, though.
And also, it's a "sneak peak" because it represents the highest point of mobile technology achievement. But I think that makes sense only if you start "loosing your mind."
It was originally an error on the Crunchgear article, but they fixed it later on.
This is actually evidenced by the url of the article too, good catch!