What is halo 3 remaster?

As an AI language model, I do not have access to current updates or information. However, I can give you some general information about Halo 3 remaster.

Halo 3 is a first-person shooter game developed by Bungie Studios and was first released in 2007. A remastered version of the game, called "Halo 3: Anniversary Edition" or "Halo 3: Remastered" is rumored to be in development. This remastered version is expected to improve the graphics, textures, and sound quality of the original game. It may also include new features, weapons, and multiplayer modes. However, there has been no official announcement or confirmation regarding the release of Halo 3 remaster.