Good question.....
Not sure what is hapening with Novarossi. No new models are introduced, Ielasi has left (so it seems), Kurzbuch went to OS, Pietsch did go to Ielasi but probably with the knowledge to get OS based engines.
MAX seemed to have bought some machines from Novarossi so I was told. The only topdrivers so far I know running a Nova based engine are running a MAX engine like Balestri en RickV. Do not forget MAG tuned has also started an own line of Nova based engines, I believe no topnames are running it but who knows in the future.

What I do see are a lot of engines made from several components, like a normal long stroke P/S set placed in an xtra long stroke housing which you can see on the placement of the sleeve center pin and 2 cuts in the lip of the sleeve. You can also see it on the heads, like today the 21PT using the RB style head and many more things. I also see very low prices for top range engines. A Mesphito with steel bearings for just above 200 euro....

It is hard to tell what is going on.