Intels Medfield processors are significantly different from all the others, which are ARM. Thus, it’s harder to get Android running on them. Before, Medfield phones could only run either Gingerbread or Ice Cream Sandwich, and Jelly Bean didn’t work. Luckily, Intel got Jelly Bean working at a fairly good time, and hopefully they’ll be releasing builds of Jelly Bean to their phones in the next few months. With the RAZR M coming out with a Medfield (reportedly), they’ll need that update as fast as possible.