According to latest rumors by Enthusiastic Citizen, the upcoming Intel 13th Gen Raptor Lake-S desktop processors (Core i9-13900K, Core i7-13700K, Core i5-13500K) will be officially announced at the end of September during Intel Innovation event. And the official release date is on October 17th. The Intel Z790 motherboards will be also launched on that day.
The Intel 13th Gen Raptor Lake-S non-K series CPUs and mid-range H770 and B760 motherboards will be announced at CES 2023 on January 5th, and release date is at the end of January.