Forgotten Prison DLC for Steel Storm is finally released:
Visit DLC's storefront
'nuff said, please come and check it out - you won't be disappointed!
When you launch Steel Storm, please pay attention to the launcher menu. I got complaints from people who bought DLC but couldn't play it simply because they didn't choose to play DLC from the menu:
After the game launches, Forgotten Prison campaign is located right under Burning Retribution campaign.
Also, if you already own DLC1, you don't have to buy DLC1 again. Just click on DLC2 on the game's page, it will carry you over to DLC2 page where you can purchase it separately. It's a standard feature of Steam.
Thank you for your support!