It's not a leak; it's a teaser. Fujifilm has posted an image of a new X-mount camera to its website and the line 'Coming on January 28th.' Here, you can see it for yourself:
Apart from what we can see of the retro-esque design that Fuji's made its trademark (dials to control exposure compensation, shutter speed, and ISO), there are rumours that it will be weather-sealed, have a 16 megapixel APS-C sensor, and be called the X-T1. There're also a few murmurings about it taking on Nikon's retro-looking, video-free, full-frame beast, the Df. We'll wait to see; it's due out next Tuesday.