Free $10 credit at the Microsoft Store (online only) when you sign up for preorder notification
If you think you bought an Xbox 1 back in 2001, think again. Hot on the heels of today’s big Xbox One annoucement, the Microsoft Store has a $10 credit giveaway offer for the Xbox One. Just enter your email for Xbox One preorder notification and receive a $10 promo via email good on any purchase at the Microsoft Store (anything priced over $10 of course).
Note: Some people are having delays in receiving the promo code email on google accounts and hotmail accounts. If you have a non-google/hotmail account try that one first.