Shortly after the initial announce from Sun, the beast is already ready for action.
A native version of http://porting.openoffice.org/mac/download/aqua.html is now available.
However, there are still some issues, and some are showstoppers (for instance: you can’t print). So NeoOffice is still a safe bet for now.
Oh, by the way, Camino 1.5 has also been released.