I've already acknowledge knowing very,very little about exactly what happened.If others know more then that's fine.
Given that this just happened yesterday I'd wager that very few,if anyone,who isn't directly involved knows anything more than the few tidbits seen in the press.
So I would rephrase your comment to read "much has yet to be revealed about this case".
Generally, if something will justify or lend support to a cops story, their own departments will make sure it gets in the press. It's done all the time, probably daily.
And I can't think of any scenario where there would be some justification for this event, since the Dallas police officer herself who fatally shot her neighbor to death, admitted she had mistaken his apartment for hers and shot him dead.
I would think if anything has yet to be revealed, it won't be in her favor.