The FUJIFILM X-E1 follows in the tradition of the award-winning FUJIFILM X-Pro1 and utilizes the same proprietary 16.3 Megapixel APS-C X-Trans CMOS sensorTM and the same X-Mount for use with FUJINON XF lenses, all in a body that is 30% smaller than the FUJIFILM X-Pro1.
While Phase One has recently updated its software to support Fuji's X-Trans sensor, I'm waiting to see if Adobe follows suit and improves its conversion support in Lightroom.