That is in the release notes, but the word "allow" leaves me uncertain. Have they simple made the bass control more sensitive? -1, -2, -3 still seem to be in the same spots. Maybe each step reduces the bass more aggressively?
Some here may feel that 0-0-0 now sounds good, but to my ears, its still more bass heavy that it used to be pre-2.5.0. I was using -3-0-0 with 2.5.0 but adjusted it to -2-0-0 or -1-0-0 depending on what i'm listening to. Really would like to have more bands at the least.
It would really be nice if we had frequency response data between pre-2.5.0, 2.5.0 and 2.6.0. Hoping for continual improvements. 2.6.0 definitely sounds better than 2.5.0 but I still feel that the pre-2.5.0 was FANTASTIC and still remains my reference for audio in this car.