The seventh (!) SpatioTemporal Asset Catalog Sprint will take place virtually, on March 2nd and 3rd. The goal for this one is to fully release 1.0.0-RC1, and update all of the ecosystem tooling to it in order to validate that it's ready to go, and so the update to 1.0.0 can be done immediately after the spec comes out (just changing version numbers).
We recommend having some previous experience with STAC, but if you are willing to dive in and tackle open issues in ecosystem projects you are welcome to join.