This blog is just to announce the start of the new campaign, like always - the blog format wasn’t going to change
For all information on the changes, they were also shared in the Patch notes for this update
https://community.gemsofwar.com/t/update-8-6-patch-notes
So it is not just mentioned in the Campaign Article, it was shared in the patch notes with all the other information.. the campaign article was also shared in the patch notes and in-advance of the patch notes being released.