It's funny how he cites Carmack's plan/finger updates as a source of inspiration since these kind of changes went in over the course of the games development, not on a day 1 patch! If you consider the game on 'disc' as the finished product, there is no way you could consider this game complete given the incredible number of changes in this patch. A while back reviewers tried to pull this 'on disc review only' thing and I don't think that's even possible anymore due to DRM like Steam requiring a patch before the game can start.
Even so, bravo to the team for the extra effort to make sure the experience is as good as it can be.
(Oh, and atmospheric refraction? Surely he means improved mie/raleigh atmospheric light scattering)