RFCs (Requests For Comments) are proposals for larger changes in Wagtail. They are submitted as a pull request on the RFCs repository and everyone is welcome to participate in the discussion until the RFC is approved.
Wagtail Space US 2020 will be a virtual conference this year. It will take place between Thursday July 30th through Saturday August 1st. The call for proposals is open. If you're interested in giving a talk (pre-recorded or live) you can submit your proposed talk via the Call For Proposals form. Deadline is July 1st.
We'll keep you updated on that as it develops in the coming months.
Running an event or meetup? Let us know about it by tweeting to @WagtailCMS.