Hello,
We hoped to have the updated manual ready much sooner, but our page-layout expertise is all tied up in Macworld preparations right now! The good news is that I just posted an interim version of the manual (not that pretty, but certainly readable). Here's a direct address, as it's not linked from the OmniFocus web page yet:
http://www.omnigroup.com/ftp/pub/sof...1.5-Manual.pdf
Thanks very much for your feedback, and I hope this helps you become more familiar with OmniFocus. By the way, the searchable onscreen help in OmniFocus is always up to date for the version of the application you're using, and for the most part it has the same content as the manual; just choose OmniFocus Help from the Help menu.
As for the Focus button, it's still there, but we revised the default toolbar in version 1.5. You can see all of the available toolbar buttons by choosing Customize Toolbar from the View menu.
Thanks again, and let us know if you run into any other problems.