The BlackBerry PlayBook OS has been updated today to version 188.8.131.524. It's a small update at just 37mb with support for AIR and Flash for developers. You can expect the usual tweaks and fixes to go along with this one as well. Not the biggest update for most users as it doesn't bring any fun new features, but an update is and update, right? You should see the update available now. Hit up the comments letting us know how it is!