OpenPublish 1.6 has been released: http://bit.ly/getop
Please download and let us know how you like it.
If you are updating from a previous version, please do keep in mind that there are major changes (most importantly in the theme) and you should take usual care to backup the existing version and do extensive testing.
If you have a theme developed using previous openpublish theme, please note how the new demo theme uses Contexts and note the change in the list of theme regions. We highly recommend to use similar implementation approach in your theme.
If you are upgrading from a previous version, your admin theme is most probably RootCandy. We strongly recommend to switch to using admin (Slate) theme provided in the download. Please also set Admin(Slate) as your node edit theme.
You may also want to change "Store RDF" checkbox to "unchecked" in the OpenCalais settings. New version sets it to False, but you may have the setting already overridden in your installation, in which case it won't touch it.