Quoting from the cointelegraph article:
"The founder also promised that in addition to the common practice of crediting BTC holders with equivalent balances of the new coin (B2X), they would also receive “a proportional number of Satoshi Nakamoto’s Bitcoins as a reward for their commitment to progress.”
In total, eight exchanges are listed as official supporters of the fork. The project’s roadmap includes features such as Lightning Network support, smart contracts and, ultimately, anonymous transactions."
I think this is probably the reason why BTc price is spiking at the moment.