Launch today but fork occurred October 25th so however much Btc you held on that day is what you will receive in btg. https://bitcoinmagazine.com/articles/bitcoin-gold-launches-tomorrow1/
For all those that had BTC in there accounts make sure you pick up your free BTG. I did mine today via coinomi and to my surprise there was some $$$ waiting for me there. Upon receiving my free bee BTG's I changed it to BTC and now have it locked away. I lost about 15% through exchanging and then transferring but seeing it was a free drop I am not all that concerned. What you need to know is exactly which exchange you had your BTC on at the time of the fork and then go claim it. I followed this process, more info here: https://coinsutra.com/claim-bitcoin-gold-btg/ Good luck.
I just claimed my free BTG on my Trezor. https://blog.trezor.io/claim-bitcoin-gold-bgold-btg-f66969e7f2c0
Well I admit to being wrong on this. BTG is listed as the 5th largest coin on coinmarketcap.com and is priced at around $370 Just reinforces to me how nutty the market is at the moment. People are buying any old rubbish.
Is it just FOMO that keeps its price up? And maybe a bit of FOSO (fear of selling out) from holders at the fork? I know I have FOSO about BCH, even though I don't hold hopes for it gaining traction. I just think though, there is a lot of potential sellers that could dump on any price rise.