Approximate date of the fork 28.12.2017
Emission 21 mln
So initial emission will be 21 million which is not equal to total number of bitcoins that exist right now.
All BTC holders will receive not only B2X in the 1 to 1 ratio but also a proportionate number of "bitcoins of Satoshi Nakamoto", as a reward for the progress commitment.
You will get more than just 1:1
B2X is already trading at 0.07
BTC in yobit which is quite insane if we look closely we can see its total supply will be 210 billion (
https://digitalcoinprice.com/segwit2x) rather than just 21 million.