BioWare certainly enjoys teasing the crap out of Mass Effect fans. After the obscure teaser campaign leading up the Mass Effect 3 announcement, they've started up a similar method of promoting the upcoming 'Arrival' DLC.
Not much is known about the recently announced Mass Effect 2 add-on, except that it will be leading up to the final game. With a name like 'Arrival,' we expect to see more Reapers, or at least Reaper-related themes.
So enjoy the new screenshot, because that's all you're getting right now. We know there are (possibly Eclipse) mercs and some sort of interrogation-torture going on, because that woman really doesn't look too happy with her situation. Also, the lack of refreshments and party favors kind of gives things away. Being Commander Shepard, you'll probably be tasked with rescuing her.
Nothing about this picture actually gives it away as 'Arrival' content, except that Mass Effect diehards might swear they've never seen this before -- and BioWare made a pun with the DLC title. If you'd like to see more, BioWare plans to release another image tomorrow once the related post has been retweeted 1000 times; alternatively, Facebook users may head on over to the official Mass Effect 2 page and 'Like' the crap out of the corresponding post.
If this isn't the definition of being a massive tease, we're not sure what is. Mass Effect 3 will be out at the end of the year.