This page is created as a temporary location to gather all known issues, unfixed bugs and other limitations for M3. When the list is finalized, a release notes document will be created similar to the one for M2 that will contain the final Known Issues list. The Release Notes document is expected to be published on the website, see M2 Release Notes for an example. Hopefully, we'll also be able to create the Release Notes in time for the final snapshot and package them with it.
You are requested to edit the page in order to track current critical issues relating to M3.