Well, what you have there is Fab B of one of the Customer Reference Boards. These are boards that Intel uses internally to test new processors, chipsets and/or core BIOS support for such. From time to time, one of these boards is given to a customer to allow them to perform early testing/evaluation of their support for these new processors and chipsets (and for what will eventually be production boards). In these cases, the boards are not supposed to be resold; they are supposed to be destroyed or returned to Intel.
It is very unlikely that there are going to be any BIOS updates available for this board. BIOS updates were not posted anywhere where the public could download them. Early testing/evaluation would have been done under a non-disclosure agreement and the customers would be receiving BIOS updates (if any were even produced) through non-public methods.