Aperture provides partial support for the X-Trans RAF files. The X-Pro and X-E1 are supported and Aperture's demosaicing of the X-Trans raws from those cameras is good. So it's fair to assume Apple will get around to supporting the X-E2 and X-T1 in their standard "always last and late" fashion.
If you're on a MAC download the trial of Iridient Developer to process RAF files. Another good option is PhotoNinja which does a stellar job with the X-Trans sensor.
Adobe's demosaicing of the X-Trans sensor is weak; ACR/LR have problems with it. Unfortunately the same will be true of Adobe's DNG converter so, although that option will work, you won't necessarily see the best the X-Trans sensor can produce. Adobe has made some corrections to their demosaicing of the X-Trans sensor and the expectation is they'll eventually get around to cleaning it up. In the meantime they just posted a release candidate for ACR/LR (8.4) which still has trouble.
To see the best the Fuji can offer use Iridient or PhotoNinja.
Joe