From the PlanetXbox360.com feature top list:
"It’s that time of the year again as developers and publishers start gearing up for the industry’s biggest gaming event, E3. Before they finalize their grand plans to captivate audiences this summer with showcasing their latest and greatest upcoming games, the majority of publishers make a pit-stop at the Game Developer Conference (March 5-9) and the upcoming PAX East (April 6-8). Both are used as focal points to start seeding with the media and even announce a few key titles that won’t be overshadowed by the gargantuan announcements in June for E3. That being said, the rumor mill has already started churning."