Yes you read that correctly, FS25 has no fields, only farmlands.
One field you see in-game, field you can own is not FS17, FS19 and FS22 alike field definition configured field where AI farmer plants crops and works the field, in FS25 its just a piece of farmland.
Now all you experienced large terrain developers should be shocked because unless giants upgraded farmland image technology to allow more than the usual 256 channels, colors ie farmlands, then FS25 can only have max 256 fields.
I don't know as I've not inspected farmland images yet, but what I've seen from riverbend springs makes me very very worried
