Here's Why All Rational Miners Will Activate SegWit Though BIP148
A segment of the Bitcoin community is preparing a user activated soft fork (UASF), using Bitcoin Improvement Proposal 148 (BIP148). If they go through with it, there could be two types of “Bitcoin” on and after August 1st, which this article will refer to as “148BTC” for the BIP148 side of the split, and “LegacyBTC” for the non-BIP148 side.
At time of the split, 148BTC nodes will no longer recognise the LegacyBTC chain as valid — no matter how much hash power mines on this chain. 148BTC would basically just be its own coin.
https://bitcoinmagazine.com/articles/op ... gh-bip148/