Journeys Booster Details

Summary: I am looking for more details about what Journeys booster will include. Onboarding often has additional processes that are running in other systems. what are the capabilities or expected behavior of connecting with 3rd party applications.

Content (required):

I see a post from a while back outline the broad functionality but wondering if anything else has been published at this point.

Version (include the version you are using, if applicable):

21D