I just received a code in my email for my amazon purchase. The main page does not mention it at all, so it may only be for those that already pre-ordered. I'll update the thread when we find out more.
http://www.amazon.com/Starcraft-II-..._2?ie=UTF8&s=videogames&qid=1271943658&sr=8-2
It now officially applies for new and exisiting orders.

http://www.amazon.com/Starcraft-II-..._2?ie=UTF8&s=videogames&qid=1271943658&sr=8-2
It now officially applies for new and exisiting orders.
update: Game release date is now July 27, 2010Get a Free Code to Participate in the "StarCraft II" Beta
Pre-order StarCraft II: Wings of Liberty and get a free code to participate in the StarCraft II beta. The code will be emailed to you within 5 business days after you place your order. Offer valid when shipped and sold by Amazon.com. Offer valid on all existing orders. Limit of both one per household and one per customer. Amazon reserves the right to change or terminate this promotion at any time. Here's how (restrictions apply).
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