Today Bungie revealed some more details about Halo 3′s Forge, as well as the Bungie.net file sharing system. Before that, however, Bungie’s Luke Smith wanted to clear up the confusion surrounding the Halo 3 Epsilon:

The Epsilon is a closed, final phase testing for Halo 3. We won’t be making the Epsilon available for public consumption, so while that’s immensely disappointing for folks hoping that Friends and Family invites would be extended for the Epsilon, just know that each day you wait in agony is another day closer to September 25.

So yes, it does exists, and no, you can’t play it. This week’s updates are after the jump.

To start, Forge is actually a lot deeper than Bungie let on. It’s not only a map editor, but a multiplayer game type as well. The idea is that players can be Monitors in and out of editing. When the map is relatively complete, eight players, which points to Xbox Live support, can jump in and start playing. Here’s the cool part. Imagine this scenario, you’re playing a game of slayer on your forge map. All of a sudden not one, but two Warthogs appear over a hill, and they both want to plow you over, effectively recreating Frogger. So you’re thinking to yourself “dude, I sure could go for a Brute Chopper right about now”. At this point the player who is acting as your team’s Monitor can come over and grant your wish providing you with weapons or vehicles, even equipment. The Monitors are limited by a set amount of “budget” as a means of preventing meaningless maps that are wasting disk space. The players can even use Forge to add crates and boxes, teleporters etc. It concludes by saying that there will be addition Forge details on the internet soon. My bet is some form of Campaign functionality, but we’ll have to wait and see.

Next order of business, Bungie Pro. Bungie already revealed that players will be able to upload their Halo 3 screenshots and saved films to Bungie.net where other player can go and see them. If you see a save film that looks like it might be interesting, you can choose to have your 360 download it the next time you play Halo 3. Players can also use Halo 3 itself to browse saved files. Up to eight files can be downloaded at a time. You will be able to upload up to 25MB of files which can be organized into six different slots.

For some people, 25MB just doesn’t cut it. That’s who Bungie Pro is for. For 750 points a year, players can upload 250MB which can then be organized into 24 different slots.