Spirit System

I am just wondering when the spirit GTR will cope with 12 volts as things seem to be changing, greater power available from the servos with less amps. will it just be an update or complete new components?

All Spirit units have support for 12V servos from 2009. This is way ahead of any other unit.
The only exception is GTR and RS because internal JETI receiver cant handle high voltage more than 10V.
However our upcoming W1 will work well with up to 16V, same as other Spirits.