I was hoping to do some preliminary development with HyperRAM and a Xilinx FPGA, but am having some trouble finding anything pre-built. I found one option, the S7 mini, but the distributor says that they won't have any more units until February 2021. I wrote Cypress, who linked me up to someone at Avnet (who also deals with Xilinx), and they were unaware of any other boards. So as a last ditch effort to make sure I turned over every rock, I figured I would check here before I give up. Thanks.
You can check the HyperBus Ecosystem support page on our website. You will find some options from the chipset developers or from 3rd party developers for your requirement.