I am writer of FirmaSite theme.
Pleased to meet you. That’s an interesting looking theme.
I am talking about some standard post meta data that we can safely use in our own UIs but i see WordPress is going to content block systems inside WYSIWYG rather then post formats.
Emphasis is mine.
Where did you read that? That link that you posted earlier:
Post Formats UI is exiting core, will live as a plugin
That post says nothing like that at all. Honest.
The Post Format UI was something brand new that was scheduled to be included in WordPress 3.6 or 3.7 (I forget which).
i see WordPress is going to content block systems inside WYSIWYG rather then post formats.
I myself am not aware of any changes like that and again, that’s not what that post says.
That would be a HUGE change if that were enforced in core WordPress somehow and I’d like to think the support team would be aware of that.