Seems like a nice improvement. Here's a good article on it: https://news.xbox.com/en-us/2024/09/...-2024-preview/
They'll finally be doing something about the ground detail. That was my biggest pet peeve with FS 2020. Up in the air, things looked pretty good, but once you got close to the ground, it was garbage. Basically they electronically generated terrain from elevation/topographical data, and then drew rough approximations of buildings and slapped decals on them. This data was faulty, too. For example, some unpopulated areas near where I live had random houses strewn about in FS 2020, including some which would be impossible to reach, even if they existed in real life.
Now the ground detail will be far better, and supposedly we're seeing improved buildings, too. Oh, and there will be animals on the ground!
You'll also be able to float around in a hot air balloon, which is kinda cool, I guess.
The cars on the ground, which were also trash in FS 2020, will supposedly get a big upgrade, too.
One thing that bored me about FS 2020 was that the scenery was too similar due to the ground detail issue, so I felt less motivated to fly to far-flung locations. You've seen one cliff or mountain in FS 2020, you've seen 'em all. I have optimism that this might be different now.
I guess we'll see.