OpenGL does support geometry shaders (at least nVidia published
an extension on it - ATi/AMD seems to think this is unnessecary).
Ah okay... I didn't know that. But i those threads, people still mention "Geometry Shaders" now and then. I think they expected it to be core functionality that worked on most of the proper gaming systems. So far, implementing OGL geo-shaders is not worth-while because quite alot of people can use them (ATI + Intel chips).

They also introduced a deprication model which says which functionality will be dropped in future versions. For example displaylists, Vertex arrays and inmediate mode will disapear in future versions.
Does that mean that VBO's are the only option when it comes to rendering? :? Are the considered reliable these days (good driver implementation)?

Compared to the only available Direct3D on decent
Windows platforms (9) OpenGL 2.2 (aka "3.0") does outstanding well.
Nice! That sound really positive. I'm tired of reading all those "It sucks, They failed, OGL = dead" messages.