Marathon is under constant development by the team at Mesosphere. The team keeps an eye on questions in a few places.
The marathon-framework Google Group is where team and community members ask and answer longer, potentially open-ended questions.
The “marathon” Stack Overflow tag is for specific questions that can be solved with a small amount of code.
If you’d like to take part in design research and test new features in Marathon before they’re released, please add your name to our UX Research list.