Gizmondo has a hands on report about Office 2008 for the Mac. The good news: it's Intel native, as you'd expect. The bad news: they've "updated" the user interface, as you'd expect.
The old Office running under Rosetta is definitely a pig, but having used Office 2007 on Windows, I shudder at what's going to change in the interface. Office 2004 is by no means perfect, but it's the devil I know. Fortunately the screenshots for O'08 don't seem to be as radical a departure from the old scheme as O'07 was. I'm crossing my fingers.