Evidence that the next short is about Pharah

I just wanna say that's this is not 100% certain.

but there's a good chance the short coming next week is about Pharah.

Take a look at Blizzards art for this year's gamescom http://wow.zamimg.com/uploads/screenshots/normal/649526.jpg

Notice how Pharah is the only Overwatch hero on this art. And you may be thinking, that probably doesn't mean anything its just promotional art.But let's take a look at last year's gamescom art...

http://bnetcmsus-a.akamaihd.net/cms/blog_thumbnail/lj/LJ6BSE67KC4U1470655499460.jpg

Guess who's the only overwatch hero on there? Bastion, who just happened to get a short at gamescom.