An update (Opus 9.0.0.1) just came out.
-Nudel
Strange - 'Check for updates' doesn't find this - do you have to manually download and install this update?
-Carol Haynes
It's probably a manual download for now.
GPSoft usually put stuff on the automatic updater a little while after the release. I don't know if that's to spread out the server load or if it's to give a few early adopters a chance to spot problems before suggesting the update to everyone. (People who aren't enthusiastically checking the forums every day would probably be irritated if they kept being prompted to install minor updates that fix things they didn't care about. Lagging the automatic updates helps strike the balance between not making people install updates every day and being responsive to problems/requests that people bring up.)
Firefox updates seem to work the same way, FWIW. The auto-update usually lags behind the website by a few days in my experience.