CNet expected a Quark announcement at Seybold:
Many in the publishing industry expected Quark to announce a release date for an OS X-compatible version of its dominant QuarkXPress software at this week's Seybold trade show. A Quark representative confirmed that the company is working on such software but offered no target dates.
Quark officials told MacCentral this week that they support Apple's upcoming move to Mac OS X only and hint that it will not be a problem... "We haven't announced a specific date, but we are working very closely with Apple -- they are aware of our schedule and we are aware of theirs"
Steve Jobs was also recently questioned about when QuarkXPress will come to Mac OS X: We expect some news from Quark in the not too distant future and that will take care of that problem.