Most organizations need a way to look at where all the initiatives are as compared to roadmap. How far are from release , what are some organization impediments and so far. Metascrum is a meeting that works well when teams are working on the same product or initiatives that are related . Instead of each product owner having a meeting with stake holders, business owners, sponsors, a meta scrum is one meeting that can address these questions.
Read this article for more information on Metascrum, who should attend and how to run it.