In an interview, Shane Kim, Head of Microsoft Game Studios, pretty much confirmed that the next Halo game will be present at E3 when he said this:
"You mean the mythical Halo 3? I mean, it's silly to deny its existence when the chairman of MS (Bill Gates) announced it, but I have nothing to announce now, but expect there to be a significant announcement at E3."
Source: http://www.stuff.co.nz/stuff/0,2106,...1a7873,00.html
Update:
Peter Moore also said something interesting regarding the presence of Halo 3 at E3 and its release date:
Moore stated the following: “Expect to see the first footage from the next instalment of Halo at E3, which might shift some focus away from the competition. The game won't hit stores until 2007, however.â€
Source: http://www.xboxaddict.com/news/view.php?News_ID=6890 and http://www.clubskill.com/Game_News/3171/Master%20Chief%20will%20be%20at%20this%20years%20E 3
"You mean the mythical Halo 3? I mean, it's silly to deny its existence when the chairman of MS (Bill Gates) announced it, but I have nothing to announce now, but expect there to be a significant announcement at E3."
Source: http://www.stuff.co.nz/stuff/0,2106,...1a7873,00.html
Update:
Peter Moore also said something interesting regarding the presence of Halo 3 at E3 and its release date:
Moore stated the following: “Expect to see the first footage from the next instalment of Halo at E3, which might shift some focus away from the competition. The game won't hit stores until 2007, however.â€
Source: http://www.xboxaddict.com/news/view.php?News_ID=6890 and http://www.clubskill.com/Game_News/3171/Master%20Chief%20will%20be%20at%20this%20years%20E 3