@WTSL, the answers to most of your questions are there, just not detailed in a single list. I’ll try to help anyway (if somewhat sarcastically.)
…far and wide to get information: No, just on the ST forum. Even then, they’ve been fairly careful to avoid absolute definites.
…wrong with these people: If you watched them during the bi-weekly dev conference call, you wouldn’t have to ask this question. 
…besides allow for cameras: It has a more apple-ish shape (the brand, not the fruit.)
…more reliable: With the local processing, it certainly should be. Most of the reliability problems that I’ve personally seen were related to “The Cloud.”
…scenes and other functions: I don’t understand the question.
…any clues as to what it will be like: A few weeks ago, one of the ST employees showed a glimpse during one of the dev calls…(I think it related to some geo thing… I forget now.) Other than that, I think it’ll have things.
…made improvements: Define “improvement.” To some, a better color (colour for @AutomateEverything) scheme would be an improvement. However, I have to be honest in saying that I have no clue if the mobile app is going to be more or less reliable or more or less “easy to use.”
Seriously, though - right now, “hub v2” is PRE-RELEASE. It’s not released, so the final spec sheet might very well change. Until they actually release it, I doubt we’ll get any 100% definite feature list, etc. ST has made it available for pre-order, but they certainly haven’t twisted anyone’s arm to commit to ordering before it’s actually released. If you aren’t sure, just hang tight for a few weeks (unintentional, Ben) and see what happens…
Take care
Gary
Edit: The term “a few weeks” is trademarked by ST and used without permission (but unintentionally.)