The latest news I've heard comes from the comments section of one of Sennheiser's videos, but the comments are 3 months old :( Maybe they've decided not to release it?
Yea, I would love a shorter cable with 3.5mm primary jack. I got mine a week ago and was disappointed with the long cable along with 1/4 jack because I think it is pretty unnecessary to have a 1/4 primary jack considering it is only a 50 ohms headphone. It runs perfectly without an amp and it is just extra size and weight.
I think putting some flux on the enamel and heating it with a soldering iron will remove the enamel if there is any.