Hello there, since you said that you don't get it, let me explain it in detail.
New version features sounds for basically every small thing in game, including even details like different sounds for footsteps depending on surface, multiple ambient sounds for various locations and finally functional dynamic music that plays correctly, none of those things were present in old update and the music was glitchy, there was even a bug where 2 tracks would play at the same time or would constantly reset in wrong moments, you couldn't even adjust music volume.
Now when it comes to gameplay, improvements are even more obvious. First thing you notice is that you are finally able to choose difficulty and the game finally features checkpoints and saves your progress, while in old version if you died you would be send back to the start of 20 min long level, this was highly criticized. Big part of gameplay is also level design and AI, both of those were massively improved in 2022 update compared to update 5, which had mostly flat levels and bad AI this resulted in worse gameplay. Meanwhile fights with AI in 2022 demo are pretty challenging and the levels themselves are far better balanced for combat and progression, featuring more variety and additional activities besides combat.
As for the cutscenes, I have to simply disagree:
