As you have no doubt heard, Adobe Systems has discontinued FrameMaker for the Macintosh, and there has been no announcement regarding a version for Mac OS X. My company is 99% Mac, 99% FrameMaker, so this is very disappointing news for us. Personally, I have used FrameMaker on the Mac every working day for the last 11 years, and I still think it's a fantastic product. Adobe has offered a cross-grade to the Windows version, but this is not an option for us.
If, like me, you want Adobe to develop and release a version of FrameMaker for Mac OS X, please sign the online petition that I've set up.