Pro Tools TDM 6.9.2 adds compatibility for Mac OS X Tiger for those with Pro Tools|HD and HD accel systems. All Digidesign and Digidesign-distributed plug-ins will work once you’ve got the new Pro Tools; no plug-in updates are needed.
Still incompatible with Tiger: Pro Tools LE 6.9, Pro Tools M-Powered 6.8, Digidesign CoreAudio Driver v6.9, and all earlier versions of Pro Tools. Digi says future upgrades will support Pro Tools LE and M-Powered, though they don’t have a date for availability.
For more on Tiger, see CDM’s Tiger Special Report, updated on an ongoing basis.
Amazon.com: Mac OS X 10.4 Tiger [DVD]