So we seen this story with Ethereum and Ethereum Classic, Zcash and ZClassic and now there is fight between SegWit and Bitcoin Unlimited in Bitcoin.
Currently BTCs blocks are mostly mined by Bitcoin Unlimited people.
BTCs Price Going Down
Exchanges Decided To List Both Coins
There is a list of exchanges who decided to keep BTC as BTCore and list Bitcoin Unlimited as XBU or BTU. The exchanges who are going to do that for now are
Bitfinex
Bitstamp
BTCC
Bitso
Bitsquare
Bitonic
Bitbank
Coinfloor
Coincheck
itBit
Bittrex
Kraken
Ripio
ShapeShift
The Rock Trading
We can guess - all others will do that too.
Compare ETH and ETC