https://magentocommeng.slack.com
Generic Channels:
#general - community wide discussions
#announcements - all kind of announcements (new Magento 2 releases e.t.c.)
#random - non-magento related conversation/jokes/watercooling e.t.c.
#event -EVENTNAME - groups for given events such as contribution days, conferences e.t.c.
#events - generic channel for all event-based topics
#github - conversations around GitHub issues and Pull Requests
Special Project Channels: