Even tho we see snippets of content from time to time we have also asked for a full dev blog.
I have 2 replies to this matter that where made in the secret donator shack (so not complete threads but replies to the one where we see secret images of the game
However, these replies where made by Olafson and Duuring and since they didnt post it for everyones eyes I dont "feel safe" posting them here.
The dates they where posted where:
November 2 2014
January 2 2017
I searched for "developer" and "developer blog" so if they talked about this without mentioning those words iv missed their replies. I also only look at that one thread so if they have replied somewhere else iv never seen it.