The porting of Fab's webkit based browser (today known as Odyssey) to OS4 is now completed, and released as a public beta.
This port, known by the OS4 crowd as "MUI-OWB", brings version 1.9 of the browser to OS4, and the port was made by Kas1e. There might still be bugs present, and not all features are yet implemented, but Kas1e decided it was better to release it now "as-is", instead of waiting. Work will continue to iron out the bugs and finish the missing features, and then sync it with Fab's latest release of Odyssey, which currently is at version 1.14.
Download:
http://os4depot.net/?function=showfile&file=network/browser/muiowb.lha