MSI tweeted a teaser of a few unnamed motherboards with a launch date of September 27. One of the shots in the teaser picture reveals "Z790," confirming that the next wave of Socket LGA1700 motherboards based on the Intel Z790 chipset will debut alongside 13th Gen Core "Raptor Lake" desktop processors. This could be the day on which motherboard vendors formally launch their Z790 motherboards, although availability should be in-sync with that of the 13th Gen processors. Although we know from earlier leaks that September 27 could be the launch date of "Raptor Lake," there have been no leaks about market-availability. Intel's 700-series chipset motherboards support not just 13th Gen Core "Raptor Lake" processors, but also current 12th Gen "Alder Lake;" and you can use "Raptor Lake" processors with current 600-series chipset motherboards by simply updating their BIOS.