I'd guess you're in the "popular but about to be discontinued" column then. Carriers keep introducing new phones without much regard for how great the old ones are, because they need to get people to re-up by offering them new hardware that's somehow more capable. Maybe you can get Loopt on it, for example.

And besides, it's basically untenable to develop for a platform that will no longer available at retail by the time that version is ready. There could be half a million handsets out there, but can you imagine press that says "it's available for seven phones, three of which are no longer sold"? Ouch.