The New York State Division of Housing and Community Renewal (DHCR), which oversees the rent laws, has posted on its website:
So far, Stellar has been renewing stabilized leases using the OLD rent rider. The new one will be binding since that goes along with the 2019 changes in the rent laws. This rider also shows how market tenants trying to get back into rent stabilization can calculate what their stabilized rents would be.