The announcement was made Saturday during TNT's pregame coverage ... where Gayle came on set with Chuck and the guys to talk about their new venture together -- namely, a weekly primetime slot on CNN that sees them both talking politics and timely topics.

The program's gonna be titled "King Charles" ... and while, on its face, it might sound Chuck-centric -- you'll remember, King is Gayle's last name ... so she's in there as well.

Now, as for what sort of stuff they might get into -- well, they teased a little bit on TNT ... including the hot-button issue of guns. Charles and Gayle brought up a string of shootings that have happened over the past few months ... including school shootings and even ones that have randomly occurred to innocent bystanders -- like Ralph Yarl and Kinsley White.

Now, while they'll certainly cover stories that touch on politics ... Charles insists the show itself won't be political by nature -- meaning, it won't pander to Republicans or Dems. The way they're pitching it is ... Gayle and Charles giving their "straight shooter" opinions live.

Gayle also says it doesn't always have to be so heavy ... adding they might get into food, pop culture and whatever else they wanna touch on that's in the news cycle that week.

"King Charles" will air Wednesdays starting this all, and both will retain their gigs at CBS and Turner, respectively ... the latter of which is an already subsidiary of Warner Bros. Discovery.