OSXAudio.com reports that Digidesign is showing ProTools 6 at AES (booth 1447):
Pro Tools 6.0 boasts an all-new look and new features on Mac OS X. Shipping the end of the year, the new software offers improved performance and support for dual processor Macintosh G4 computers.
New features include a new archive/backup feature, new find function. multi-user management, new look, and other improvements.
A target date of late November was previously rumored for ProTools 6 OS X.