Halo 3 will enter its flight test during the first half of June, and 343 Industries has provided a preliminary breakdown of what Halo Insiders can expect. The goal of the first flight will be to test the distribution pipeline, updates to Challenges, and gather feedback (thanks, Neowin). A list of all the content for the flights coming to the Microsoft Store and Steam based on the development specs are below. The studio notes there may be some changes between now and when testing kicks off. New Features

Customization: Updated customization will be available for Halo 3 Forge: Forge will be available for players during this flight for Halo 3 Theater: Theater will be available for use with Mouse & Keyboard for Challenges: The complete Challenge System, including the Challenge Hub screen, will be available for the first time in this flight

Campaign Flighting will support the following Campaign missions with options for all difficulty levels, single-player, and co-operative online play:

Campaign Missions: Sierra 117, The Storm, The Ark, The Covenant, and Halo.

Multiplayer Options

Social Games: 4v4, 8p FFA, 12p Infection, 8v8 Competitive: H3 Team Hardcore (4v4), H3 Team Slayer (4v4) H3 Team Doubles (2v2) Halo 3 Multiplayer: Construct, Guardian, Last Resort, Narrows, Sandtrap, The Pit, Valhalla, Foundry, Standoff, Avalanche, Sandbox, and Heretic

Settings and Options Supported

Settings – Controls: Configure Mouse & Keyboard and Configure Gamepad Settings – Video: Field-Of-View, Vehicle Field-Of-View, Gamma, Window Mode, Aspect Ratio, Resolution Scale, V-Sync, HUD Anchoring, Unified Medal Display, Framerate Limit, and Graphics Quality Settings – Audio: Game Volume including Menu Music Volume, Game Music Volume, Effects Volume, Voice Chat Volume. Also, Voice Chat Channel, Push to Talk Voice Chat, and Multiplayer Game Sounds Settings – Gameplay: Crosshair Position, Show Invite Notifications, Enemy Player Name Color, Multiplayer Game Timer, and Credits Settings – Network: Network and Relays Settings Accessibility: Subtitles, Change Language, Convert Text-To-Speech, and Convert Speech-To-Text

If you want in on the Halo 3 flights, you can register here.