According to a recent EA press release [http://ea.gamespress.com/release.asp?i=1544], the Arrival DLC will be released on March 29th for 560ms/bioware points.
From the article:
After the glory that was Lair of the Shadow Broker, I can't wait to see how this DLC plays out.
From the article:
And we have some great screenshots to boot:In Mass Effect: Arrival, Commander Shepard is sent to the edge of the galaxy to rescue an undercover operative who may have evidence of an imminent Reaper invasion that has been looming since the very beginning of the series. Returning and playing a prominent role in Mass Effect: Arrival is fan favorite Admiral Hackett, who is voiced by legendary science-fiction actor Lance Henriksen (Alien, Terminator).




After the glory that was Lair of the Shadow Broker, I can't wait to see how this DLC plays out.