According to Tom’s Hardware the move is a strange as it will make the older chipset a viable option as both support Intel's latest Raptor Lake CPUs. The newer boards consist of PCIe Gen 4 and PCIe Gen 3 reconfigurations. This will include a PCIe Gen 3 degradation from eight to four lanes, but a PCIe Gen4 upgrade from six to 10 lanes.
All this means that the B760's may be more of a sidegrade than an upgrade. The B760 can operate more PCIe Gen 4 enabled devices, but if there are no PCIe Gen 4 devices installed this is not much of a deal.
A ten per cent price hike might be a difficult sell for Intel as B760's Gen 4 capabilities on the chipset will rarely ever be needed for system's Intel's B series platform targets, including cheap gaming machines, and cut-price workstations. The B760, will have Raptor Lake support baked in with BIOS's already prepped from the factory to support Intel's latest CPU lineup.