According to the Russian website for 1C Company, it looks as though a game adaption of Battle: Los Angeles is indeed in the works.
The site says it will publish the game in Russia and it's to be released on March 11, which is day and date with the film's release. The page also lists Saber Interactive as the developer.
Not sure if it will be released digitally or at retail or both just yet, but we'll send a mail and ask just that.
Yesterday, it was revealed that the AU ratings board has classified the game, which was the first time we'd even heard of it.