All credit/blame for setting this up goes to @bernatgabor. I’m just the messenger letting everyone know that this has happened.
Discord is a group-chat platform, similar to IRC/Slack in many ways, with fairly well integrated voice chat and fairly well built moderation tools. Discord servers  are roughly analogous to Slack workspaces, with each server being its own community with its own moderators. Users can join multiple Discord servers. One of your options is now the PyPA Discord. ^.^
Good question. I don’t know why this one was created specifically. That said, I do like Discord and it’s nice to have a place for voice-chat-if-we-want. I will note that lately a bunch of Python projects (urllib3 and Beeware being the easy ones to point at) have made Discord servers as well.
: Don’t ask me why they called it “server” though. Pretty sure people who use/used IRC would find that choice distasteful. Thankfully, most of Discord’s users are born after IRC had peaked.