Yes its true, they had this transparency going on with the said post. But honestly, why teasing us at BlizzCon Opening Ceremony with phrases such as " news for all the franchises" "we listen to the community" "all our games get the same love" etc...
I know this sounds incredibly whiney from my part, but when they do transparency, they should be honest and talk about it what happens with the franchise, and not this around the warm soup talk.
They clearly said they would let us see work in progress stuff, even if it is not yet ready for public, to show of their amazing work on all their games.
but what did you expect. They said within an prior announcement, that there won't be any big news regarding Diablo 3 on Blizzcon this year.
So i didn't expect anything at all.
Related to the blizzcon, i'm also a bit disapointed. Just another wow addon, classic servers after years of begging, new set for hearthstone, something for overwatch and something for heroes. With the lack of content for diablo 3 and the expected announcements for the rest, i was realy expecting something completly new. I'm still trying to find my motivation for the upcoming season :-)
So lets see what time is bringing for diablo players.