WhatsApp may be working on a Communities feature
According to WABetaInfo, the Communities feature seems to give group admins more power over groups. This includes the ability to create groups within groups, which can be similar to how channels are organized under an umbrella Discord community.
Admins can invite new users through a community invite link, and then start sending messages to other members. It’s hard to say what exactly these chats might look like right now, but WABetaInfo note that they appear to be end-to-end encrypted.
It also appears that a subtle design change will help distinguish communities from regular group chats. As WABetaInfo Underline, the community icons will be squares with rounded corners, a format that WhatsApp accidentally turned on (and then quickly turned off) in October. It is not known when the communities will be officially deployed.