Ideally, before the end of the year (2021), we want to have version 1.0.0 finished. In this version, users should be able to connect using an official Minecraft client and a Minecraft account (Mojang/Yggdrasil or Microsoft) and be able to see chat messages. Blocks/Entities/Movement/Actual gameplay will probably not be included in this version because of time constraints, but there is no reason for us to specifically exclude them if we have enough time.