I see that there is a release candidate for Open Watcom 1.6, both c and Fortran versions as of October 11.
Web site: http://www.openwatcom.org
"Welcome to Open Watcom ù a joint effort between SciTech Software Inc, Sybase« and the Open Source development community to maintain and enhance the Watcom C/C++ and Fortran cross compilers and tools. An Open Source license from Sybase allows free commercial and non-commercial use of the Open Watcom tools."
http://www.openwatcom.org/ftp/devel/open-watcom-c-os2-1.6-rc1.exe
http://www.openwatcom.org/ftp/devel/open-watcom-f77-os2-1.6-rc1.exe
There are support groups on news://news.openwatcom.org and bugs can be reported on http://bugzilla.openwatcom.org/
Source: OS2VOICE