Odd... I got the same thing, except I'm from the US. Only reason I mention this, is due to the fact 99% of the time, these giveaways are US-based. Still gave me that message. I think they ran out of keys perhaps?

Hmm... is there any reason; any reason at all this game reminded me... and even my friends... WAY too much in the design of Halo 3: ODST? Especially with that city level they were showing yesterday. o.O