The space is being actively developed but it also requires you know where to look.

This is a journal that tracks a lot of new abstract stuff: https://www.abstractgames.org/

Notable recent releases:

https://boardgamegeek.com/boardgame/352238/turncoats

https://boardgamegeek.com/boardgame/2655/hive

https://boardgamegeek.com/boardgame/272380/shobu

https://boardgamegeek.com/boardgame/430875/high-tide