HD has announced a new engine.
Lots of updates including 4 valves per cylinder (8 valve), two plugs, larger throttle bodies, counter balancer, and a claimed 124lbs of torque (flywheel??).
Seems like Polaris might be a good thing for HD fans.
It's partial water cooled like the new engine in the Bonnies. I saw somewhere (unofficial) that they're planning on a big variant...131ci if I Remer correctly.