E3 2017: The 5 biggest reveals during the Xbox event

Xbox chief Phil Spencer speaks on stage at the Microsoft Xbox E3 2017 Briefing at the Galen Center in Los Angeles, California. The Electronic Entertainment Expo (E3), which focuses on new products and technologies in electronic gaming systems and interactive entertainment, takes places June 13-15 at the Los Angeles Convention Center. LOS ANGELES -- The show floor doesn't open until Tuesday, but E3 has already kicked off. On Sunday, Microsoft was the first of the three video game console makers to hold their annual media event ahead of the Electronic Entertainment Expo. The highlight was their hardware, but there were some other interesting details unveiled by Microsoft. Prepare to hear this a lot between now and November 7: "the world's most powerful console."