Wordpress 2.0.5 has been released and you can download it here. Codenamed Ronan, this version includes 50 bug fixes which you can found at the Dev Tracker’s site. This one might be the last major released before the wordpress 2.1 comes out but as usual, it is always advisable for user to upgrade to the latest version to avoid security threat.
When I check at my Dreamhost control panel, the automatic upgrade option has not been there yet. So, upgrading manually is my only option. For those people who did not know how to upgrade your Wordpress, here’s a guide for you (taken from Wordpress Codex’s section)