While yesterday the big 1.2 Biomes Addon released: https://samvieten.itch.io/metroidvania-pixelart-tileset-biomes
It is no reason to slow down. The 1.3 UI & Icons update is already nearly complete and the final details are worked out by now. And Spoiler alert: It got much bigger than intended. While at first just containing UI, it now has over 100 high quality hand crafted icons too: For the same price of course.

The Animated Monsters Pack will also get a FREE content update with Effects
You should be able to download the new content by the upcoming week if you already purchased this set: https://samvieten.itch.io/animated-pixelart-monsters

Both Updates will arrive within this month.
Work on 1.4 will take a bit longer tho and arrive probably next month.