Byzantium activation should occur on the block 4,370,000, and at the current block generation speed this will happen on October 17, reports CoinDesk.
Initially, the activation of Byzantium, the first stage of the Metropolis hardfork, was scheduled for October 9, provided that no problems were found during the testing.
The news about postponement of the date of the hardfork was preceded by the comments of the of Vitalik Buterin, founder of Ethereum, that the platform should be conservative with respect to previous forks.
At the same time, Buterin himself wanted to have the hardfork held later - at the end of October, however, due to the upcoming Devcon 3 conference in early November, which is planned to be visited by a large number of developers, these plans were revised.
In the meantime Ethereum developer Hudson Jameson noted that the date of activation of the hardfork is already determined definitively, and can be revised only if there are problems during testing.
The test phase of Byzantium officially started on Tuesday in the test network Ropsten. At the same time, not only the first transaction after the fork was successfully verified, but also the zero-disclosure of zk-SNARK was verified. Thanks to this in the network Ethereum may appear new privacy features, currently found in cryptocurrency like Zcash.
— Vitalik Buterin (@VitalikButerin) 19 сентября 2017 г.
It should be noted that a few days ago the Byzantium was attacked. The attacker filled entire blocks with spam contracts for large sums. Vitalik Buterin, incidentally, called the attack absolutely insignificant.