Yeah, I do hate it when it says that.
Mostly because , 5 times outta 10 there is no continuation. But I will eagerly await the sequel.
Good movie, I liked how the "Black ops guy" (The guy with the night vision), while normally an invincible character in these scenarios, was taken down. The ending, with the video link blacking out and the sounds of the tac squad moving into a firefight reminded me of Fallout and Patriot Games.