For those of you who were wondering whether to upgrade to WordPress 2.8.5, given the relative stability of 2.8.4, wonder no longer: you might as well upgrade to 2.8.6 instead. Yesterday, WordPress 2.8.6 was released, to address a couple of security vulnerabilities found since 2.8.5. Ryan discusses the fixes being provided in 2.8.6: our recommendation is that it is a worthwhile upgrade, particularly if you provide login privileges to some/all of your readers. 
In summary: If you operate WordPress blogs and did not yet upgrade from an earlier version of WordPress 2.8.x, you should strongly consider upgrading to this version. The customary testing procedure is recommended: download it, set it up in your testing environment and vet it through your test suite(s), prepare your CM machinery to handle the new version if it passes your tests, and deploy it to your production environment.
