A good portion of the latest Fragmented patch will be invisible to most players. That’s not to say that it isn’t a big patch, because it is; the patch notes boast that it’s the largest patch to the game since it first hit Early Access. It’s just that much of it won’t be visible whilst you’re just out and surviving. Localization for Spanish and Chinese players? Invisible if you don’t speak those languages. Improved network optimization? Important, and potentially noticeable, but hidden deep within code and not always clear.
That’s not to say that players aren’t going to be experiencing anything new with this patch, of course, as the game does return PvP siege to the game so that you can knock down your neighbor’s house with impunity. Said neighbor will be able to explore the improvements (and new restrictions) to base-building as well, or perhaps he’ll just head out into the wild to find some of the rare loot now dropped by various NPCs. And then he’ll come back and knock you down. At that point, you would probably like to be invisible yourself.