What is Wine Staging?
Wine Staging is the testing area of winehq.org. It contains bug fixes and features, which have not been integrated into the development branch yet. The idea of Wine Staging is to provide experimental features faster to end users and to give developers the possibility to discuss and improve their patches before they are integrated into the main branch.
Wine Staging is maintained as a set of patches which has to be applied on top of the corresponding Wine development version. Package maintainers can decide if they want to include our full patchset, or only want to cherry-pick patches for specific bugs.
Here are some links to the most important topics.