Looking at the charts, it doesn't look like it has quite happened just yet.
Although I would bet it has happened on other exchanges already.
The CME is set to launch their Bitcoin Futures Products tonight, so it will be interesting to see what kind of effect that has on prices.
My guess is that it doesn't do all that much, considering the last one didn't.
I've been impressed by the lack of BTC selling at every major milestone along the way. It doesn't even really look like it wants to sell off at $20k yet either.