No inside information, but the original target dates were 2016 and 2017, right?
When I first heard about the new system, I figured that LE would move to it eventually, but I guess I didn't realize their goal was that soon. Of course I also thought, "didn't they just change to digital" but that was in January 2010, right?!?
I believe the article linked in another related thread stated that there was grant money for the EMS agencies to buy new radios, but I haven't seen anything about the fire departments also getting money, and that will obviously be a barrier.
And they need to finish EMS first ... the rigs are moved, but the base stations and dispatcher are not.