Please move all Wikimania 2022 pages on https://wikimania.wikimedia.org/wiki/Wikimania to 2022 in sidebar menu "Previous Wikimanias"
Please create the name space of 2023 for all the Wikimania 2023 pages that are about to be created.
This page https://meta.wikimedia.org/wiki/Wikimania_2023 meta can be put in place as the placeholder.