Automatic increase AssemblyFileVersion

With the "Built in" stuff, you can't, as using 1.0.* or 1.0.0.* will replace the revision and build numbers with a coded date/timestamp, which is usually also a good way.

For more info, see the Assembly Linker[^] Documentation in the /v tag.

As for automatically incrementing numbers, use the AssemblyInfo Task:

AssemblyInfo Task[^]

This can be configured to automatically increment the build number.

There are 2 Gotchas:

Each of the 4 numbers in the Version string is limited to 65535. This is a Windows Limitation and unlikely to get fixed.
Why are build numbers limited to 65535? [^]
Using with with Subversion requires a small change:

Using MSBuild to generate assembly version info at build time (including SubVersion fix)[^]
Retrieving the Version number is then quite easy:

Version v = Assembly.GetExecutingAssembly().GetName().Version;
string About = string.Format(CultureInfo.InvariantCulture, @"YourApp Version {0}.{1}.{2} (r{3})", v.Major, v.Minor, v.Build, v.Revision);