N311TN and N312TN are believed to be a new model from Mooney Aircraft, designed to take back bragging rights for having the fastest single engine piston airplane from Columbia. Speculation is that it will be a turbo-normalized version of the Mooney Ovation.
N312TN been observed here filing at 260 knots, and it just left Kerrville for Mobile (no doubt headed for the Sun-N-Fun air show), filing 235 knots at 25,000 feet. That’s just as fast as a Columbia 400.
It’ll be interesting to see what Mooney announces at the show.