It always uses the Development version of Wine. The Staging one contains community-made patches to make sure the game works properly, but be aware that sometimes a software may not work in Staging, but it'll work in normal one. Do not be confused with the version numbers though as for example the Stable 2.0.2 version contains a wide range of features from Development 2.17 version and below. The Development version is more often updated as the improvements and bugfixes are released in small packages, while the Stable's update process is slow as it relies on releasing the update as one large package containing the features from previous Development versions.
Upon entering the WineHQ page you may have noticed the Stable and Development versions. 10.7 Winecfg fails to detect the audio driver despite being installed (Linux).10.6 Nothing appears after running a game patch/patched game.