Today the official E3 website was updated with almost all of the press conferences that will be held before and during the new 'Media & Business Summit'.

This is the schedule released so far. All times are in PST (GMT -8:00):

Tuesday, July 10th:
8:30PM - Microsoft Press Event

Wednesday, July 11th:
9:30AM - Nintendo Press Conference
11:30AM - Sony Computer Entertainment Press Conference
2:00PM - EA Press Conference
3:15PM - Activision Press Conference
4:30PM - Midway Press Conference
5:45PM - Konami Press Conference

Thursday, July 12th:
8:30AM - Take Two Interactive Press Conference
9:15AM - THQ Press Conference
10:30AM - Ubisoft Press Conference
1:30PM - Namco Bandai Press Conference
3:30PM - Disney Interactive Press Conference

As you can see, Microsoft will be holding its press conference first this time around. And of the big three, Sony will be last.

Both Sony and Nintendo will hold their press conferences during the first day of the new E3 (Microsoft's is a pre-E3 keynote). The E3 Media & Business Summit will start on July 11th and end on July 13th. Stay tuned for more news about E3.