I just loaded the new 1.2.5 FW. So far the SQ is nothing like the 1.2.3b that I remember on JH16. It appears the 1.2.5 is a tad more extended in the highs. The bass dropped a little in intensity but became much tigther. The mids pretty much the same as 1.2.2.
Looks like I'm going to stick with it
I think you are right, after listening to a few songs, somehow the highs are back again and the bass is there but not as pronounced as the 1.2.3beta version however still more than 1.2.2. It looks as if it has been adjusted to please both camps. :)