Dave Yeo has released an unofficial build
of Firefox 10.0.4 (5/7/2012) from the Gecko 10 "Extended Support
Release" branch. This is similar to the earlier test build 3, but with
the proper "Firefox" branding; it requires libc065. Firefox is a
stand-alone browser based on Mozilla code. See my Warpzilla Tips page for more information.
Source: OS/2 Warp News and Rumors