Gigabyte is preparing the B660 motherboard for DDR4 memory support.
The B660 chipset will be coupled with the non-overclockable Intel 12th Gen Core (Alder Lake-S) line. Both are expected to be released in January sometime next year, maybe immediately following the CES 2022 press conference. While the B660 Gaming X board supports memory overclocking, neither the H670 nor the B660 series allows CPU overclocking. certainly by not a conventional definition, so the time the CPU spends in Processor Base Frequency (previously PL1) and Maximum Turbo Power (formerly PL2) states may still be changed.
This GAMING X board is compatible with a DDR4 memory of unspecified frequency (the specs are yet to be concluded). The basic x16 slot should be Gen5 compliant, as should the major M.2 slot, both of which are directly linked to the CPU.
Unexpectedly, this motherboard retains two M 2slots and dual PCIe Gen x16 slots connected to the chipset. At this time, PCIe Express parameters like width and generation are unknown.