Kyosho is transitioning from the MR-03 (3rd Generation) to the MR-04 (4th Generation) series starting in November. This initial release appears to be and Asia with no official dates for the American market at this time.
The new MR-04 Readyset will feature the same design as the MR-04 Evo released earlier this year but with a brushed motor/esc and come RTR with a KT-531P transmitter and receiver built into the main board.
You can see the full product description here on Kyosho's website: https://rc.kyosho.com/en/rccar/miniz/mini-zrwd/32356gmw.html