That's not funny (but it really is)

"Flying in Legion will be acquired through Pet Battles, announces Blizzard"

It's satire and I needed a laugh.

"We got the idea after seeing a post on the forums that suggested flying speed be gated by Mythic raid progression," explained Feasel. "Now obviously, that idea was just plain stupid, but it did make us realize that gating flying behind pet battles would be a totally awesome idea!"

 Much more at the link.  Go read and enjoy