Is There A New Batman Arkham Game On The Horizon?

In case you thought they were done w/ the batman Arkham franchise after Origins, you are sadly mistaken.  According to a GameSpot forum member, some marketing materials arrived for March promos at a ‘big’ video game store w/ the new game titled Batman: Arkham.  It is rumored that Rocksteady will make an announcement sometime this month.  So if all goes well, we can see exactly what the developers have planned for the Dark knight in the next installments of the popular Arkham series.