Intel 13th Gen is the latest range of processors coming from Intel, offering more P (performance) and E (efficient) cores, as well as other improvements in clock speed and DDR5 support up to 5600 - going beyond 12th Gen's 4800 support.
By all accounts, Raptor Lake (Intel 13th Gen) is a stepping stone to the Meteor Lake range of processors, which are believed to be arriving in 2023. You can think of this generation as the evolution of what worked with Alder Lake's architecture dialed up to the extreme.