User blog comment:TheMegaShyGuy/Red vs. Blue Blood Gulch Chronicles Re-Remastered/@comment-30133540-20111019201342

They aren't. And also, they couldn't even if they wanted to. Halo CEA doesn't include it's multiplayer. All it has in the Multiplayer aspect is that it comes with new maps for Halo Reach. (Oh, and the Halo 1 Magnum Pistol comes with the upcoming title update)