The updated version of X2Go Client for Windows will be: 4.0.2.1+hotfix1+build2
All I will have to do is update the bundled openssl win32 and cygwin openssl libs. No need to recompile.
I will work on getting the updated version out ASAP.
If you're wondering why it will have this lengthy version string:
Explanation for hotfix1 is here: http://wiki.x2go.org/doku.php/doc:release-notes-mswin:x2goclient-4.0.2.1
-Mike#2