They will contact you, but do not expect it to be this week, or even next.
Generally, they send you a letter, congratulating you and informing you that further information will be arriving (ie, contract, housing info, orientation info, etc.). It may be a month before you get a letter so do not rush home and wait for it.
You can contact the program if you like, there is nothing wrong with that. If you need to know dates of contract being mailed, orientation starting, you can ask when you call or email.