The existence of an Open Office version that will run natively on Apple's OS X using the Aqua graphics system will be revealed at Apple Expo Paris next month.
Until now, a Mac user had to install the X windowing system on their machine to run OO. This was available via the OS X 10.4.x installation CD or via download. The new version will require no such gymnastics of the user and will be welcome for that. This is a big step forward for OO.