Update 6/3/2015:

After YEARS of waiting, Fallout 4 has finally been officially announced and WILL BE shown at E3 2015. Get hyped Fallout fans!

Original article is as follows:

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With E3 2015 just around the corner, novoGamer has compiled this list of confirmed games that will make an appearance. This year's E3 looks to be one of the best in some time. Hopefully it will live up to our expectations and we can have a year of fantastic games. 

Confirmed Games:

Game	Publisher	Platform(s)
Assassin's Creed: Syndicate	Ubisoft	PS4, Xbox One, PC
Batman: Arkham Knight	Warner Bros. Interactive	PS4, Xbox One, PC
Battleborn	2K Games	PS4, Xbox One, PC
Crackdown	Microsoft	Xbox One
Crossing Souls	Devolver Digital	PS4, PS Vita, PC
Call of Duty: Black Ops 3	Activision	PS4, Xbox One, PC
Deus Ex: Mankind Divided	Square Enix	PS4, Xbox One, PC
Disney Infinity 3.0 Edition	Disney Interactive Studios	PS3, PS4, Xbox 360, Xbox One, Wii U, PC
Divinity: Original Sin Enhanced Edition	Larian Studios	PS4, Xbox One, PC
Doom	Bethesda Softworks	PS4, Xbox One, PC
Enter the Gungeon	Devolver Digital	PS4, PC
Fable Legends	Lionhead Studios	Xbox One
Fortnite	Epic Games	PC
Forza Motorsport 6	Microsoft	Xbox One
New Gears of War Title	Microsoft	TBA
Guitar Hero Live	Activision	PS3, PS4, Xbox 360, Xbox One, Wii U
Halo 5: Guardians	Microsoft	Xbox One
Homefront: The Revolution	Deep Silver	PS4, Xbox One, PC
Hollowpoint	Ruffian Games	PS4, PC
Just Cause 3	Square Enix	PS4, Xbox One, PC
Kingdom Hearts 3	Square Enix	TBA
Lego Dimensions	Warner Bros. Interactive	PS3, PS4, Xbox 360, Xbox One
Mad Max	Warner Bros. Interactive	PS4, Xbox One, PC
Mario Maker	Nintendo	Wii U
New Mass Effect Title	EA	PS4, Xbox One, PC
Magic Duels: Origins	Wizards of the Coast	PS4, Xbox One, iOS, PC
Metal Gear Solid V: The Phantom Pain	Konami	PS3, PS4, Xbox 360, Xbox One, PC
Minecraft: Story Mode	Telltale Games	PS3, PS4, Xbox 360, Xbox One, iOS, Android, PC
New Mirrors Edge Title	EA	PS4, Xbox One, PC
Naruto Shippuden: Ultimate Ninja Storm 4	Bandai Namco Entertainment	PS4, Xbox One, PC
No Man's Sky	Hello Games	PS4, PC
Overwatch	Blizzard Entertainment	PC
Persona 5	Atlus	PS3, PS4
Quantum Break	Microsoft	Xbox One
Relics of Gods	Seasun Games	iOS, Android, Mac, PC
Rise of the Tomb Raider	Microsoft	Xbox 360, Xbox One
Rock Band 4	Harmonix	PS4, Xbox One
Ronin	Devolver Digital	Mac, Linux, PC
Scalebound	Microsoft	Xbox One
Shin Megami Tensei X Fire Emblem	Nintendo	Wii U
New Star Fox Title	Nintendo	Wii U
Star Wars Battlefront	EA	PS4, Xbox One, PC
Unannounced Star Wars Title	EA	TBA
Sword Coast Legends	Wizards of the Coast	PC
Tom Clancy's The Division	Ubisoft	PS4, Xbox One, PC
Tom Clancy's Rainbow Six: Siege	Ubisoft	PS4, Xbox One, PC
Uncharted 4: A Thief's End	Sony	PS4
Until Dawn	Sony	PS4
XCOM 2	2K Games	PC
Xenoblade Chronicles X	Nintendo	Wii U

Note: At the time this article is posted the games above are confirmed, but due to unforeseen complication some of the previously confirmed games may not make an appearance. 

Rumored and Unconfirmed Games:

Game	Publisher	Platform(s)
Battlefield 5	EA	TBA
Borderlands 3	2K Games	PS4, Xbox One, PC
New Devil May Cry Title	Capcom	PS4, Xbox One, PC
CONFIRMED!  Fallout 4	Bethesda Softworks	PS4, Xbox One, PC
Final Fantasy XV	Square Enix	PS4, Xbox One
New Hitman Title	Square Enix	PS4, Xbox One, PC
The Last Guardian	Sony	PS4
Sniper: Ghost Warrior 3	CI Games	PS4, Xbox One, PC
New Resident Evil Title	Capcom	PS4, Xbox One, PC
Watch Dogs 2	Ubisoft	PS4, Xbox One, PC
Uncharted Remastered Trilogy	Sony	PS4

Fell free to comment about the games you are most excited for and what games you would like to see at E3 2015.

Have a lovely day :)