I don't think a bedrock version of Ham is coming any time soon. It's double the work for the server admins, and they're not at a suitable position to be handling two different hubs for two different platforms. A lot of the biggest servers also do not have a Bedrock version as it's kind of impractical as
plugins are scarce. Most plugins used by Java Ed servers are from spigot, and spigot does not support Bedrock just yet.