Even though Windows Vista has been out a few months the myth that OpenGL is being degraded is still being perpetuated. Even though it was debunked what seems like at least a year ago the story just seems to have legs.
Anyway to re-emphasise that all is well in the land of OpenGL they have promoted the article about OpenGL on Vista to their frontpage. Obviously support is still not as robust as the XP implementation, but then again most drivers are lacking at the moment (due to the recency of the release).
