The line up sounds about right, F6 has been on the books a while, during the grace race season Glenn Hall (D&D) told me that it has existed for a while, the marketing types just didn't want to release it yet, The best part: approx. 123-125 HP.
Other potentials in testing
V 1000 motor in F chassis, SV 650 motor (both out of the Suzuki bikes)
Get this, when I was at race school, took the factory cat tour, noticed that outside in the front of the factory lot, there were four test pilots: looked like two bearcats, one rev, on one RX1 testing in the field. On the way out of the factory they were towing the RX1 in by the bearcat. Just thought it was funny.