If there is anyone who has no clue what E3 is, like myself, this is from the Wikipedia article:

Electronic Entertainment Expo, commonly known as E3, is an annual trade fair for the video game industry, presented by the Entertainment Software Association (ESA). It is used by many video game publishers and accessory manufacturers to reveal and advertise their upcoming games and game-related merchandise. Unlike Gamescom and other video game trade fairs that are open to the public, E3 is an exclusive, industry-only event. Persons who apply to attend are required by the ESA to verify that they have a professional connection to the video game industry.