That's a good question. I've never really been interested in cameras that write a "raw" file, myself, so I never really looked into it. Considering there's no agreed-upon standard for a RAW file (http://en.wikipedia.org/wiki/Raw_image_format), the question first must be asked what KIND of RAW file you're talking about, and then the next question is whether this RAW file is actually a valuable and recognized format coming from the N900 to use in any image manipulation software.

As for my Android handset using Camera360, it can (and I have set it up to) write a 100% quality JPEG file for a near lossless JPEG file. That's probably just as good for a 5MP cell phone as writing what you think of as a RAW format, plus the benefit of compatibility with all software that can read JPEG images.