Bit of a slow news week... Firefox 4.0 will be officially released this
week on the "primary" platforms. The OS/2 release is unlikely to
coincide with that; there are still some problems to sort out, including
issues with newer versions of SQLite. With the new accelerated
schedule that Mozilla has planned (new stable version every couple
months), it will be even more difficult for other platforms to keep up.
Source: OS/2 Warp News and Rumors