CivLuvah
Deity
I've got that email too and I dint read it as being accepted its just a confirmation of your application which is nice as now you know your application got through but I'm not assuming these emails confirm you will get a go on the scenarios. Not to sound like a downer just the impression I got.
That's what I thought as well. The clue was this section:
The first scenario will arrive in July. Once selected, you will receive a confirmation e-mail and the game will be automatically added to your Steam library.
That means they have yet to determine whether you can be selected. Once you're selected you get the game.
