Not sure what this potentially means, but the PC Gaming Show 2023 Preview is this Thursday, November 17th. On Steam, it's advertising that you can watch it live on Steam, but when you go to the showcases Steam page, it lists a lot of interesting games. High on Life, Starfield, Redfall, Star Wars: Jedi Survivor, Suicide Squad: Kill the Justice League, Ark 2, and along with a handful of others. Even on each individual games Steam page, it displays an advertisement for the showcase.
What could we get, who knows. Could just be reused footage we've already seen, but it will be interesting to find out.
Here's a link to the showcases Steam page
PC Gaming Show: 2023 Preview (steampowered.com)