ARS Technica has a lengthy article about Intel's Larrabee project. They provide lots of information about it and try to clear up some confusion:
When Intel's Pat Gelsinger finally acknowledged the existence of Larrabee at last week's IDF, he didn't exactly clear up very much about the project. In fact, some of his comments left close Larrabee-watchers more confused about the scope and nature of the project than ever before. I count myself among the folks that were thrown off a bit by what little we heard about Intel's forthcoming "many-core" coprocessor, so I did some digging and asking around in an effort to get a bit more clarity..