If you meet this message, at first app open "App can’t be opened because it is from an unidentified developer", please right-click on the app, and select "Open". Afterwards, you could open again the app with a standard double left-click.
For more details, please read this: http://support.apple.com/kb/ht5290
FYI, in order to be an "identitied developer", for each new executable file, we have to submit a complete software setup to Apple and to wait for their approvement. Presently we sometimes publish fixes a few hours after the user requirement, and the Apple approvement takes min a couple of days. Sometimes it takes much more time, and sometimes Apple rejects it with weird reasons. We could not give the fast support we presently give.