Just a heads up that if you have a smart group that has the criteria set to Operating System Like 10.4, it will include devices with 10.10.4 Yosemite.
I was using the smart group as a way to exclude OS X Tiger for some policies and noticed that it was including systems with 10.10.4
The solution is to set the scope for OS X 10.4 Tiger smart group to be Operating System Like "10.4." Note the period at the end. It makes a huge difference.
