MAVLink fastest output

Hi guys,

I am wondering, with faster processors, on Pixhawk 2.1 and Pixhawk 3 Pro from Drotek.

Is a telemetry refresh rate of 30Hz or more currently possible or will it in the future? What about MAVLink 2.0?

Also, is it possible to output coordinates as a mix of GPS and IMU at a fast rate or do I need to use a GPS unit like the UBLOX NEO-M8L?