From the very beginning, God made the Sabbath "special" ("hallowed", "sanctified"); note that it's not "special" because of the Ten Commandments/Law of Moses, but because God made it so from the very beginning.
Yahshua, on the different issue of marriage (Mark 10:6), refers to the way things were established by God at the beginning. His example leads me to conclude that the same principle applies to the issue of the Sabbath. Therefore, I must conclude that the Sabbath (seventh day, not first) is still "special", not because it was part of the Mosaic Law, but because God made it so from the beginning.
I'm not real sure what to do with this information, but there it is: the Sabbath is still special.