Network split 100% happening on Aug 1. BitcoinCash will fork off using Bitcoin-ABC client and will most likely take majority hashpower with it, making segwit DOA.

https://steemit.com/bitcoin/@ancap47/bitcoin-hf-coin-already-has-started-trading-against-cny-on-viabtc-exchange

https://vote.bitcoin.com/arguments/the-bitcoin-abc-client-and-big-block-fork-bitcoincash-is-a-better-roadmap-than-both-segwit-and-segwit2x