UPDATE: It appears as if Kotaku also noticed this, getting in touch with an EA rep to talk about the game. According to EA, "There will be "handheld/mobile" products tied to Mass Effect 3, as noted in our past few earnings announcements. They are part of the Galaxy at War system. We will have more details to share soon."
In a recent EA earnings call and press release, there is an entry for Mass Effect 3 in the Handheld/Mobile column. While the console and PC sections for the game have been well publicized, not much is known about this portable title.