E3, otherwise known as the Electronic Entertainment Expo is an exhibition held annually in either May or June held Los Angeles Convention Centre or LACC. It is seen as the biggest gaming expo where game developers and publishers would show off their new games or products to public or press.
The reason I and most other people get excited for E3 is the press conferences from companies like Microsoft, Nintendo,Sony and Bethesda and others. Every year hundreds of thousands of people from around the world watch via streams such as Youtube and Twitch.
For me personally the most exciting announcements were Halo Infinite from Microsoft and Fallout 76 from Bethesda. Other Big announcements were games announcement like Super Smash Brothers Ultimate from Nintendo & Microsofts'w Gears of War 5, first look gameplay from Last Of US 2 & Cyberpunk2044 and announcements that Microsoft had bought 5 game studios.