Add Cancun

README.md

@@ -10,7 +10,8 @@ This repository contains the consensus specifications related to the Ethereum ex
 
 | Version and Code Name | Block No. | Released | Incl EIPs | Specs | Blog |
 |-----------------------|-----------|----------|-----------|-------|-------|
-| Shanghai | TBD | TBD | TBD| [Specification](https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/shanghai.md) | |
+| Cancun | TBD | TBD | TBD | [Specification](https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/cancun.md) | TBD |
+| Shanghai | TBD | TBD | TBD| [Specification](https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/shanghai.md) | TBD |
 | Paris | 15537394 | 2022-09-15 | [EIP-3675](https://eips.ethereum.org/EIPS/eip-3675) <br/> [EIP-4399](https://eips.ethereum.org/EIPS/eip-4399) | [Specification](https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/paris.md) | [Blog](https://blog.ethereum.org/2022/08/24/mainnet-merge-announcement) |
 | Gray Glacier | 15050000 | 2022-06-30 | [EIP-5133](https://eips.ethereum.org/EIPS/eip-5133) | [Specification](./network-upgrades/mainnet-upgrades/gray-glacier.md) | [Blog](https://blog.ethereum.org/2022/06/16/gray-glacier-announcement/) |
 | Arrow Glacier | 13773000 | 2021-12-09 | [EIP-4345](https://eips.ethereum.org/EIPS/eip-4345) | [Specification](./network-upgrades/mainnet-upgrades/arrow-glacier.md) | [Blog](https://blog.ethereum.org/2021/11/10/arrow-glacier-announcement/) |