Foreign media last week exposed the invitation to Microsoft's Xbox event, which indicates that an event will be held on May 21 at the company's headquarters in Redmond, Washington, to officially unveil the next generation of the Xbox gaming console.Today, the domestic gaming website 3DM reported that Microsoft's Xbox event may not just be one, as information suggests that the company has already booked the venue at the University of Southern California Galen Center for June 10. Since this date is exactly the day before the opening of the E3 gaming exhibition, and Microsoft has experience holding Xbox press conferences here in the past, it is generally believed by the outside world that there will be another Xbox 720 event.It is speculated that Microsoft might adopt a similar event strategy to Sony's, meaning that on May 21, only some new technologies of the Xbox 720, along with presentations of launch game titles and platform game developers, will be announced, while the Xbox 720 console itself will make its official debut at the June 10 event and the subsequent E3 gaming exhibition.