I wouldn’t call Dave the Diver new (released exactly a year ago) nor indie (Mintrocket is a subdivison of Nexon). Yet it’s something that can be recommended wholeheartedly.
Couple of games in no particular order that are pretty new and can be considered as indie:
Since Ellipsis hasn’t been mentioned yet, here’s my recommendation:
Ellipsis is an action-packed Avoid ’Em Up with minimalistic, yet powerful neon styled visuals. Guide your ship through a mysterious universe while deftly avoiding hordes of roaming enemies, spikes, lasers and more.
Ellipsis on Steam Store