Jup, you'll just get selected. But if you've received details about a project you can safely assume that you're in it. (Don't hold it against me if it doesn't, I'm just talking from my own experience with VMC).
If you're in a test, you'll receive all the details you need prior to the test. VMC strives to get this information to you at least 48 hours before the test begins. This e-mail will contain all the information you''ll need to participate. Just make sure that you read it properly once you get it.
It's 10:00 where they're right now, so they've got a couple more hours to get the e-mails out the door. They've still got a full workday ahead of them. (Nothing here yet, but I've faith)