Well, I just updated my WordPress sites (like the one you’re lounging on, now) with 2.7.1, which was released today. It took me about one minute per site, so, to say the least, this is easy stuff.
This release fixes 68 bugs and is a maintenance release. There are no notable changes when logging into your WordPress Dashboard. Instead, small perks, like allowing a “Contributor” user to delete all spam, are included. Make sure that you have a complete backup of your database and WordPress directory, before upgrading.