What kind of nonsense is this? The week was instituted by God himself and goes back as far as recorded history, the Bible, in the first chapter of Genesis.
However, this kind of nonsense is prophesied to be implemented in the last days (Daniel 7:25), “but not yet.”
And NO, I am not a JW. ;-)
Right, we are free from the law and observation of rituals and days etc. Even the Sabbath, as Jesus said, was made for man, not man for the Sabbath.
But the week was instituted before the law and tells us something about how God made us. Physically, it has been shown that we benefit greatly by resting one day out of seven. (More obvious, of course, is our need for approximately eight hours of sleep per day.) I believe God put man on hourly, daily, weekly, monthly, and yearly cycles, not for legalistic, religious reasons, but it seems like that's how he's made us because these are woven into the very creation itself as described in the first chapter of Genesis.
This has all the makings of oppression by trying to do away with the natural weekly cycle and regular rest (followed later most likely with attempting to do away with 24-hour days and regular daily rest).
The Bible predicts all of this in Daniel 7:25 during the very end of the age. So it's coming but, as the guy in the movie, Gladiator says, "Not yet."