9.0 is on the disc. Once you install it from the disk, you'll want to immediately update it BEFORE launching iPhoto for the first time. There is a data loss bug in 9.0. The latest version is 9.4.2. Enjoy
I own iLife'04 and iLife'11 but not iLife'09. The promos and packaging of iLife'11 suggest the major improvements since iLife'09 are to iPhoto (v.9), iMovie (v.9), and GarageBand (v.6). Although iWeb and iDVD are are again included in the 5-app iLife'11 bundle, I don't think there's been much if any change to these apps since iLife'09. The version of iDVD that came with iLife'11 was v7.1 (so you can check against your current version). Personally, I needed iWeb v3 to solve v2 backwards compatibility problems.
It worked just fine on my Mac OSX10 from 2011. I no longer have this machine so I do not remember the exact OSX designation. In any event, I would give this a try. The greatest probability is that it will work.