<Tinfoil hat time>
I recently saw the post on this subreddit talking about the new site so I wanted to scope it out. Instead of going to battle.net I went to the blizzard site to navigate to the site and saw that Diablo 3 is not in the recently released category. I'm not sure how long it has been gone from this category but it doesn't seem like it should be lumped into the "other blizzard games" category, which is basically all non supported old games (old wow expansions, sc, diablo).
On top of this fact, there is a slot in the recently released games section for another game. One could argue that it's simply the formatting, 3x2, or it might be a slot for a new recently released game?