Bethesda announced "Fallout 4" to much rejoicing last week along with the news of an E3 press conference. Gamers knew to expect more details for the followup to 2008's "Fallout," such as a possible release date and game mechanics, and maybe a few surprises. The Bethesda E3 live stream begins at 9:45 p.m. EDT (6:45 p.m. PDT) and a leak may have revealed a "Dishonored 2" announcement during the event.

"Dishonored," developed by Arkane Studios and published by Bethesda Softworks, was a hit with fans and the company quickly announced it would be a new franchise. While many expected "Dishonored 2" to be announced during Bethesda's first ever E3 press conference, it seems like the game was confirmed during a rehearsal that was captured on a hot mic.

Harvey Smith, "Dishonored" co-director, and Ralph Colantonio, Arkane president, were going through their presentation when a hot mic broadcast the announcement on Bethesda's Twitch channel, Kotaku reported.

In addition to "Fallout 4" and quite likely "Dishonored 2," the Bethesda E3 press conference could include a new "Doom" game and possibly a sequel to "Wolfenstein: The New Order." Others expect some more content for "The Elder Scrolls Online" and Den of Geeks hopes that a tease of a new "Quake" game will be part of the press conference. Considering ZeniMax Media is the parent company of Bethesda ("Fallout 4") and id Software ("Doom" and "Quake"), it makes sense, but is pretty unlikely.

"Fallout 4" will be the focal point of the Bethesda E3 press conference and we'll likely see plenty of gameplay footage and details about the post-apocalyptic world of Boston. GameInformer has a list of things it would want to see in the new "Fallout" game -- such as improved shooting, V.A.T.S tweaks, better third-person view and maybe a vehicle or new means of transport. Polygon has a similar wish list for the game, and hopes there is no predetermined protagonist and players can choose either a male or female character.

The biggest talking point is a possible "Fallout 4" release date. Online retailers have a "TBA 2015" date or a "Dec. 31, 2015," placeholder, which means fans may not have to wait much longer for a new "Fallout" experience. Previous rumors about a PlayStation 3 or Xbox 360 version of "Fallout 4" were quickly debunked by Bethesda.

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