I can’t believe this hasn’t been laid out more clearly…
To my knowledge, Halo: CE Anniversary will include 7 maps that use the Halo Reach multiplayer engine for Xbox Live play.
My question, which at this point I think is an unfortunate “no”, is whether or not we’ll be able to to play the original Halo: CE multiplayer offline. 343’s initial explanation was that they weren’t going to build classic Halo: CE multiplayer for Xbox Live play because it wouldn’t work or feel as it should because it was never designed for WAN play. But they never explicitly said whether or not you’d be able to play the classic multiplayer locally.