They canceled my order for the heroes, e-mailed me and told me they found a pair and would give me 25% off, went to order them again and they couldn't find them in stock again. As a result, they e-mailed me the 25% code.
I was also one of the people offered 25% off. Called the number Nike gave me yesterday to order and their phone line was experiencing "technical difficulties." Spoke with a rep on Nike.com and a supervisor is supposed to be contacting me about the issue within the next 3 days.