The most I've seen about the 4PK is on Futaba's site -

http://2.4gigahertz.com/systems/futk4900.html

I don't see mention of telemetry. A search there on telemetry didn't return anything. I wonder if they are working on that or don't consider it necessary?
I wouldn't know where you could check into that, but they may answer an email about it if they know you're considering one.