We are getting closer! An updated version of the Mendeley Desktop 1.0 Preview (1.0-dev3) is available. It can be downloaded from the bottom of the downloads page or via automatic update from Mendeley Desktop 1.0-dev2.
This update includes many bug fixes, including fixes for the de-duplication tool and the Mac Word plugin. For the full run-down, please see the release notes.
Thank-you to all the eager users who have tried the previous preview and given us feedback. This preview is expected to be very similar to the final release, so please let us know if you encounter any problems.