It is...kind of. In Lion, there are two separate and parallel sets of OpenGL pipelines--one is the same as Snow Leo (OGL 2.1 + benefits), the other is known as the "forward context API" and that is full, honest OGL3.2. So in order to use OpenGL 3.0-level functions, apps will have to be recompiled for 10.7 only (because Lion uses its own version of XCode).