Question about CUT serial numbers

[sheamus]

I am looking at the bobcat parts catalogue. And when I lookup CT2035H, it breaks it into two groups: B4VK1101 & Above, and B4ZF1101 & Above.

1. Does anyone know what the difference is between these models? Mine is a B4VK, and is a 2020. Maybe the B4ZF are the 2021's?

Thanks.

 

[Bobcat Tractor Mac]

One is a 9x3 gear the other is HST.