Per an interview with a spokeswoman from Fuji, they have indeed provided Apple (and Adobe as well) all the needed technical information in order to support the RAW files (i.e. algorithmic information created by Fuji for the non-standar filter array, etc etc). Please don't spread any more misinformation about it, it's already been flamed to death on all the online camera forums. You can still choose to 'blame' whomever you wish about why it's still not supported by Apple, but you can no longer reasonably assert that Fuji hasn't done their part by providing them what they need. Nondisclosure agreements were signed as well.
Having said that, I find it ridiculous at this point that it's not supported, for several reasons, some being the seemingly similar Fuji users who also use Aperture as well as the opportunity here for Apple to take some market from Adobe (who as of yet are not producing very great output files for Fuji X-trans). Apple was/has been at a disadvantage to Adobe for a long while now, and being an outsider, I presumed Apple would want to take advantage of this (and any similar) opportunity to grab some share from Adobe. I was well wrong, and it seems that other lesser-known-used companies are now doing just that.
Well good on them. I for one will be looking at any/all (new)comers and will certainly be going with the best of those. Sorry Apple, you lost another one. There was a real competition, for me, btwn Aperture and LR4 up till this point. You'd have to pull a rabbit out of your hat to keep my Aperture biz.