Intel's 11th Generation Core "Rocket Lake-S" desktop processor family could be formally unveiled in just a few weeks from now, with HotHardware reporting a 2021 International CES unveiling (virtual event), for both the processors and their companion Intel 500-series chipset motherboards. This would put the unveiling around mid-January for the virtual launch event.
Availability is a different story, with the report predicting that while the Intel 500-series chipset motherboards will be available from mid-January, the processors won't arrive until March. Older reports predicted a market availability of these processors to almost miss Q1, and spill over into Q2 (April-June). Since "Rocket Lake-S" is based on the current LGA1200 package, the Intel 500-series chipset motherboards are expected to support existing 10th Gen Core "Comet Lake-S" processors, along with out-of-the-box support for the 11th Gen.