They were never, as a matter of contract, going to receive the current box, it was always gonna be at least one version-old. (This was mentioned last year when the deal was announced).
I guess, maybe, if you had to choose between one designed for a single diffuser, and one designed for a double, you'd now take the single I suppose ... assuming all the internals remained consistent. Or maybe not, depends on what else changed.
Either way, whatever precise specification, I don't think the photo helps much, I doubt Red Bull Technology officially designate their gearboxes with silver magic-marker, It's gonna have a very specific assembly number, I think it is just more likely that in the particular photo, Lotus were just using Red Bull gearbox number 5 from their supply.