I love the Fuji X100. I've talked about it many times, and I will keep talking about it until I'm blue in the face. Some may find the fixed 35mm focal length limiting though, and I can understand that. Hey, we're not all cut from the same cloth.
Fuji's WCL-X100 was the answer for people wanting something a little wider, and it was met with rave reviews. For those looking for something a little longer and possibly more fit for portraits, they've released the TCL-X100, a 1.5x tele conversion lens that gives us a 50mm field of view. If it's anything like the WCL-X100, I'm certain the image quality will be nothing short of stellar.
The TCL-X100 will work on the X100, the X100s and the upcoming X100T. Be sure to update your firmware to take advantage of the in-camera distortion correction, and so that it knows what frame guidelines to use. Fuji's got this all figured out.