Yay. Halo 2 has some of the best art of any of the Halo games.
With its soundtrack the pinnacle of the series, I'm not too sure about 'edited' tracks, though.
I don't think it will happen I think the only reason 343 made Halo Anniversary was to build the communities trust so they are more inclined to buy Halo 4.
I'm pretty sure nothing about Halo 2 Anniversary has been confirmed yet... :/
Also, Bungie has much more important things to work on right now (Destiny).