Will SegWit be mandatory deployed since Aug. 1?

I've read from a post from a Chinese forum that in BIP 148: https://github.com/bitcoin/bips/blob/master/bip-0148.mediawiki

the "mandatory" start time of originally suggested Oct. 1 was predated to Aug. 1.

Although the proposal is written "soft fork", when no concensus is made till Aug. 1, will a hard fork suddenly occur at that time?

So my questions: What is actually written in this code, and is this BIP accepted and will be released in the new Core version?