It is stated in the news that it has occured.
What will be to BTC price?
BT Gold is traded at Bitfinex at 159 USD
It will just dump when everybody gets their own bitcoin gold. I think BTG is just a failed attempt at making the devs rich since likely they have so much GPU miners and they want to use it to be able to overcome bitcoins itself and be the new and true bitcoin. However, this will not happen. BTG will remain an altcoin and they can't do anything about it. Like now, you can see in yobit that they just dumped it. Prices went from 0.17 down to 0.07 and will likely go down some more.
Currently you are right at your place to have opinion about the bitcoin gold , but here we can see toward the another factor that why the bitcoin gold get crash to 0.07 btc (started from 0.17btc ) , Here the logic is simple , Most of the people knows very well that they will get Thier bitcoin gold easily , so most of them people directly sold thier btc after got , so we can understand well that how much the Market will fluctuate here to go down .
Here in my opinion we should wait for few weeks because this is that coin which is made by the bitcoin , that is the king of the cryptocurrency , so we can expect that what is the future of the coin and how much we will be Able to make profit for long term investment in this coin .