Halo 2 has been released way more than 2 years ago now, but is still one of the most played games on Xbox Live. So it's rather logical that MS keeps released "new" content for the game with these 2 maps named Desolation and Tombstone, to be released on April 17.
Also, todays patch wasnt supposed to improve framerate, i think it just made the textures look a bit better on ultra, and foxed some ossued with nvidia hair. (1 Hour ago)
One of the things that made the game look awesome in the early trailers was the dynamic lighting. Kinda sucks that they removed it, but i also see why its hard to keep in a big open world. (1 Hour ago)
The foliage leaves a lot to be desired(ugly grass sprites, having lots of them doesn't help all that much) but the character models, lighting and everything else looks awesome. (2 Hours ago)