Urban Taggers. However, from sources in Germany, we now have the name of that blaster and an idea of it's features that'll be coming on 9-9-12!
Sources reveal the name is the "Hail Fire" and it's said to have a 48 dart capacity with Semi Automatic Fire. No more information outside of this has been confirmed. Source: http://www.blasted.de/t2155/#post24379