Bitmain announced that they will start using Segwit2X software today - it looks that they have just started doing it!
They just mined first block signalling Segwit2X:
https://www.blocktrail.com/BTC/block/00000000000000000132f9a480325ffad6fd2a4d67499fabd2e13978288763b0
This is kinda huge for the Bitcoin. If at least 80% of mined blocks will signal the same thing for the next 2 days - it means that Segwit2X is locked and we will finally have Segwit on Bitcoin!
And that means no split on August 1st!
We'll see how the market will react - the price at the moment is $2025.