Maybe, don't forget that the objective of the Raspberry Pi Foundation has always been education, and keeping the same hardware platform for a longer period of t

Maybe, don't forget that the objective of the Raspberry Pi Foundation has always been education, and keeping the same hardware platform for a longer period of time, eschewing participation in a hardware arms race, works well for this objective (in terms of building learning materials for teachers around R-Pi etc). That said I think they have said that there will be an R-Pi too sooner it later, 2015 perhaps?