It's not "locked in". Over 80% of miners are signalling that they'll signal for segwit.
We won't know for sure for at least one month. The BTC1 segwit2x software is supposed to be released on 7/21, and that's when we'll see who actually signals for segwit.
Topic: Segwit2x reached 80% - page 2. (Read 1438 times)
Is the SegWit coming or what? Everyone says different things
Yes it is locked in. The poster above you is a known troll trying to spread FUD. 
No, it doesn't.
Look at the 24-hour totals... signalling only began on Monday. 79.17% in last 24 hours; they are basing the numbers on hashing power committed, which will eventually result in enough blocks.
Is the SegWit coming or what? Everyone says different things
No, it doesn't.
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