it will be released october 5th
source http://halocouncil.com/content.php?r=571-Halo-4-Forward-Unto-Dawn-Starts-October-5th-2012!
This was confirmed a few days ago. 
Well I didn’t know about it until I read this thread, so thanks for the news!
> Well I didn’t know about it until I read this thread, so thanks for the news!
The same, I’ve heard nothing of the date until now.
> This was confirmed a few days ago.
really?? are you sure?
Funny thing,
My birthday is October 9th