As the original tease ( from Jan 2022 ) stated…
"Dominion of Dragons’’ (working title): This feature will be our biggest and most ambitious update to date; its scale will be beyond anything we’ve previously brought to the game.
The sheer number of these teaser images of new battle items, new buildings and more, all with the common linking element of the “wyrm” image would imply they are indeed related to Dominion of Dragons.