WordPress 2.6.2 is made available couple hours and you need to decide if upgrade is right for you or even needed. I do have to mention that it contains not only bug fixes but also addresses a security issue that is common to many PHP applications.

Reading through the issues addressed as described on developers blog – I’m safe to wait with upgrade until I have a bit more time as I don’t allow open registration and my PHP is compiled with latest Suhosin. If you are not sure about yours – perhaps you should upgrade.