whether the bro 0.7 has been released and where to get it?

I know it's not a part of a user manual, but I wonder if you plan
to have Object Model Diagram for bro as part of your overall documentation?

I remember somebody expressed interest in making
an OMD. Did anything come out of it?

I have created an OMD for bro as part of my bro design evaluation. It's just a draft (there could be a lot of mistakes...) with all the classes and associations, but without attributes and behaviors included (I refer to code when I need those...). If you don't already have an OMD done or
almost done, I could revise my OMD and submit it for your review so it
could be a part of bro's design documentation.