Matt has posted WordPress 2.0.2, which is a security fix release. If you run a WP blog, update it ASAP - you don't want to wait until people figure out how to exploit the security flaw in WP 2.0.1.
The problems addressed are unannounced XSS issues privately discovered and reported to the WordPress team. Thanks to Mark Jaquith, Robert Deaton, and David House for assisting with this release.