Hello @jhuber66 ,
You are correct that the Support is not listed for the FASTPATH OS for CN1610 at this time in HWU, however 9.11 is not yet released and I am not able to find any other switches listing support for 9.11 at this time either. I would suggest that once the GA release is available for 9.11 then there may be some additions to the HWU page for support.
I might suggest engaging your account team for any further details on this, as well as possibly requesting an RFE depending on the response. As I am certain that other customers have similar concerns.