As of version 1.7 and later, a new numbering scheme is in effect. Versions are now in the format Major.Minor.Build.Revision, which effectively means that minor changes are only reflected in the build number, and the revision will typically always be zero since it is only intended to reflect a re-build of the same code base. Version numbers are still strictly increasing, so version 1.7.1948 is later than 1.7.1878. The build number will normally be strictly increasing in it's own right, so when version 1.8 is relased, it may have a version number such as 1.8.3567 - i.e. the build number is a global version number.
Also starting with version 1.7, there are different setup packages for 32-bit and 64-bit environments, and the setup-files are named accordingly. The version number for a 32-bit release will be the same as the 64-bit release if they are built from the same set of sources. Starting with version 1.7, Windows 7 and 64-bit systems are fully supported.
Version numbering is a strictly increasing sequence, a higher version number is always a later version.
