Frank has just released and announced new version of FWTools 2.2.4. It brings new versions of:
GDAL 1.6.0dev (2008-08-05, current SVN trunk)
PROJ.4 4.6.1 (2008-07-21)
MapServer 5.3-dev (2008-08-05, current SVN trunk)
Also, one bug related to HDF5 format has been fixed.
The new installer FWTools224.exe is available from the primary site or mirror site