The Chinese look for any reason possible in order to cause a quick panic sell, so you can be assured this will happen on January 31st. I will most likely sell my holdings a few days prior, then buy them back after that point in order to increase my share.
This was announced 2 months before, why would anyone panic sell? If you were a chinese guy who got scared off by this announcement would you wait 2 months to sell your coins? The only people selling now are guys like you waiting to buy lower.