I'm a little suspicious that this isn't "all over the internet" since yesterday, but I also got an official email from Paramount/CBS from their spokesperson, Elita Fielder Adjei - VP of Communications, CBS Stations at Paramount Global:

Ryan Baker Leaves Stellar Career to Lead in Chicago Non-Profit Work
CHICAGO — June 8, 2026 — CBS Chicago announced that longtime sports and news anchor/reporter Ryan Baker will depart the station after nearly two decades, concluding an accomplished broadcasting career spanning more than 35 years.

(News Blues link - never heard of it)