While the U.S. Air Force is trying to certify the KC-135 to refuel the Navy’s P-8A, the Royal Australian Air Force is planning to do the same thing next year using its KC-30A MRTT.
By Robert Frola (Flickr) [GFDL or GFDL], via Wikimedia Commons
A presolicitation notice from NAVAIR says the testing is scheduled for February, 2017.
Australia has eight P-8As on order.