I can't believe it. Really!
First, because OpenGL 4.0 is released but also because they bring much more than what I was expecting! I'm starting my reading and I'll come back with a detailled post.
It's a lot of specifications released at the same time: OpenGL 3.3 core / compatibility, GLSL 3.3, OpenGL 4.0 core / compatibility, GLSL 4.0 and 19 ARB extensions. Whouuu! Oo
nVidia announced a full OpenGL 4.0 support at Fermi released... meaning end of March!
Enjoy!