The full roadmap can be found here: Nexon Forum.
Chris will be released on 18.10.2022.
Agnes will be released on 25.10.2022 and she's confirmed to be the next Battle Pass character.
Two new skins, pajama party themed, will be released in October on 18.10.2022.
Seems that Revenant (on the left) and the newly released Chris (on the right) will get the skins.