I think so. They also did this to the Superlux HD681 (I got a maroon ring as well). It seems Superlux is trying to save a bit of $$$ by using a bit less painting on the phones. I personally like the maroon ring more, the bright red made them look a little like toy headphones. They also changed the text on the caps and the cups.
I'm also going to go and say the Superlux HD662 (red) appears to just be a closed back 681 as the 662f pretty much sounds like the 668b but closed.
Edited by Supertoaster - 9/21/12 at 12:07am