I've just read some rumblings that The Walking Dead will draw to a close with the end of it's 12th season in March 2022.

https://wegotthiscovered.com/tv/walk...ter-season-12/

There's obviously been no official announcement, but the source has apparently got things right in the past - plus, it'd make a lot of sense. The show does need to draw to a close (even though, thankfully, Angela Kang & her team of writers have done a wonderful job of reinvigorating TWD after the troubles of the 7th and 8th seasons), but most of all - the comics have finished - and considering we've got three TWD movies featuring Rick coming along, it'd make the most sense (and be the most rewarding) for the show and the movies to dovetail together.

AMC and Gimple et al will focus on other projects in the TWD universe (FearTWD, the new spin-off etc).