According to Senior Animator Michael Shahan's LinkedIn profile we can expect something rather interesting in BioShock Infinite's first DLC pack. Shahan describes his role in regards to working on the DLC pack as the "primary animation resource" and that he's been "providing animation and R&D for a new AI companion character".

Elizabeth is lovely, I'm sure most of us will agree, but who could this new AI companion be? Is it someone we've never met before or is it a familiar face? Could it be Daisy Fitzroy? What would that be like? Or perhaps the Lutece twins (oh gosh please let it be one of the Lutece twins, wouldn't that be awesome)? Boss of Irrational Ken Levine says there will be three add-ons for BioShock Infinite in total. Feel free to speculate away in the comments guys.