Intel's 13th Gen Core series will be released in two stages over the next two months. A leaked slide from an internal presentation says that the new series would be unveiled on September 27th at the Intel Innovation event (listed as 28th for Taiwan).

According to @wnxod's Go To Market (GTM) roadmap it also indicates that Intel would launch a preorder campaign for its flagship Core i9 series immediately, followed by the Core i7 and Core i5 series two weeks later. However, none of those CPUs will be available until October 20th, about a month after AMD's formal Ryzen 7000 series launch on September 27th. Intel will launch three Core K-series CPUs in the initial wave: the i9-13900K, i7-13700K, and i5-13600K. Non-K parts and their mobile equivalents are not mentioned in the roadmap. These should also be available next year. Regarding Z790 motherboards, the selling embargo should be lifted on the same day that all three Core series become accessible.

Intel Raptor Lake launch schedule:

• September 27th (28th Taiwan): Intel 13th Gen Core Announcement
• September 27th (28th Taiwan): Intel i9-13900K preorders
• October 13th: Intel i7-13700K, i5-13600K preorders
• October 20th: availability of Core i9/i7/i5 series

Intel Unveils 13th Generation Core Raptor Lake-S September 27th, available October 20th.