http://www.hdforums.com/articles/say-hello-milwaukee-eight-107-114-engines/

Maybe some have seen this.....

Here's a video I found through the Aussie HD site showing the guts of the new 8 valve 107 and looks pretty cool as far as internals go. I think that the new single cam four valves per cylinder looks pretty bombproof. 

https://m.harley-davidson.com/#bikes/family/touring/promo/engine

Not sure if people have seen this yet or not?  

What can I say? I very nearly traded my Fatbob for a triumph explorer, I've now decided to hold off for another 12 months and this time next year I'll be going down Road Glide boulevarde!!

They're not noisey with helical gears.

They would be with straight cut gears ;-)