The wonderful (and inexpensive) writing software Scrivener will soon be moving into version 2. This will be a paid upgrade and the best estimate is that it will be released sometime in October. In addition there seems to be an imminent announcement about Scrivener for Windows (currently it's a Mac-only product). So, perhaps sometime in 2011 this product will be cross-platform.
Recently the developer (Keith) wrote a long-ish essay on what Scrivener 2.0 won't do. Check it out here:
Finally, I ran across a review of Scrivener at ProfHacker written in March 2010. It's a very thorough review and covers a lot of details relevant to those who work in academia:
