It seems like the 3D Action Game listings themselves have also been moved under Studio 2 / Studio S:
バンダイナムコスタジオ内で受託開発案件に特化した「バンダイナムコスタジオ 第2スタジオ/Sスタジオ」公式サイトです。『大乱闘スマッシュブラザーズ SPECIAL』『マリオカート8 デラックス』『マリオカート ツアー』 等手がけたタイトルの紹介や社員インタビューなどを掲載し、志高いクリエイター達の参戦を待っています!
www.bandainamcostudios.com
This also stands out on one of the new listings though:
So it seems they have two projects in production for Nintendo (one for Studio 2 one for Studio S? don't quite get the split there):
- 3D Action Game (possibly a remaster / remake?)
- 2D Action Game
That sounds familiar to what EPD Tokyo have hired for but i'm more inclined to assume the 2D game in this case is Smash?