It does not appear that the H670 series has been canceled. Indeed, we now have the first photographs of ASUS, MSI, and Gigabyte next-generation motherboards, which were previously unavailable.
Meet photos of motherboards that were equipped with the H670 and B660 chipsets, respectively. However, while it goes without saying that the H670 chipset is a more advanced version of the B660 chipset, the differences between the two chipsets are not considerable, which may explain why previous reports said that Intel will withdraw the Intel X70 chipset entirely.
In any case, the H670 motherboards involved in this leak are DDR4-based, which means that they are not especially high-end devices. The B660 ROG STRIX boards coupled with DDR5 memory appear to be substantially more feature-rich than the previous generation boards. It is quite conceivable that the B660 boards will end up costing more than the H670 boards in the long run, not to mention the costs associated with DDR5 memory.
Intel is expected to introduce the H670/B660 and H610 motherboards at the Consumer Electronics Show (CES) in Las Vegas on January 4, 2022. According to prior rumors, the rollout will be limited in terms of quantity, and stores have only recently begun accumulating items to prepare for the launch.