MF/Hesston Inline Baler - New Model Differences?

Looking at the MF/Hesston small square balers online and it looks like the flywheel is now enclosed with sheet metal. Is this a recent change? Anything else change with it? Wonder how difficult this new sheet metal makes for changing out a shear bolt or greasing anything in that area. I think the model number have changed too.

Just curious.

Thanks!
Bill

MF/Hesston Inline Baler - New Model Differences?