GR: The third generation of Xbox hardware will be revealed on May 21st, and we here at GameRevolution can't wait to find out what Microsoft has planned. In an effort to gear up for the event, we've taken the time to compile everything we think we might know about the next-gen gaming box. Please bear in mind that the content to follow is all merely based on rumor and reports from alleged inside sources. Official confirmation (or at least we hope!) will come next month.