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Planned Network Upgrades

The Ethereum network goes through planned network upgrades via hard forks every nine months. The names given to future planned network upgrades.


The Constantinople hard fork will occur at block 7,280,000 on approximately 2/27/2019. The Constantinople fork consists of 4 EIPS:


Istanbul is the name given to the hard fork expected to occur nine months after Constantinople. This will be approximately 2019-11-27.