Originally posted by Some Kinda Kobold:

The game itself takes up very little storage space due to its style and lack of 4k Textures. It's likely also very well optimized unlike something like Call of Duty.

While there is patches, there's some new content. Personally I was expecting more but, TBH, the game was already released in a really good state and priced damn well. Anyone expecting major changes is a 'little' entitled.