The 1.4 update actually managed to increase midrange clarity with absolutely zero increase in treble energy. In fact, I had previously switched from the very true Mogami Neglex Quad RCA cable connecting the Pontus II to my Kinki EX-M7 amp to one with a darker countenance to battle excess treble energy coming from the Spendor A7s. After the upgrade, however, I switched back due to the new nature of the sound. I also reduced the volume my REL Tx7 sub one notch.
My CD transport is a Marantz 14S1 that I also use to play SACDs. Prior to the update, the CD sound from the Marantz was very close to that of the Pontus II. Had to listen hard to hear the differences, and on some recordings there weren't any. That has changed. A switch to the Pontus II now reveals greater clarity, more 'in the room' presence, greater ease, and more heft. I am very, very impressed.