Well it has been a year since the release of v1.6 but another version has met it's release.
Shaw's Nightmare v1.66 has these exciting features:
NOTE: Savegames from the previous versions are not compatible with this version. They will be ignored by Shaw's Nightmare.
* You can now adjust mouse sensitivity.
* You can toggle between mouse aiming and regular mouse movement.
* Demos from older versions are ignored.
* Savegames from older versions are ignored.
Bug fixes from v1.6:
* Game slot 5 now works.
* A few map bugs are fixed.