Auto generated ids with composite keys will ever be supported?

Currently auto generated ids does not work well with both EmbeddedId/IdClass.

I understand this is a documented limitation as of date. Will this be supported in future? Will there be a timeline for this.

Ref: [HHH-16854] - Hibernate JIRA

You can follow and upvote [HHH-15074] - Hibernate JIRA

Sure. Done.