The Ethereum expansion project Scroll announced the launch of the Scroll Beta testnet for developers and users on the Sepolia testnet. The improvements in this version include zkEVM upgrades, bridge upgrades, and infrastructure upgrades. Scroll’s testnet on Sepolia will run alongside the future mainnet as a primary testing platform for users and developers. Scroll Goerli will be discontinued after the mainnet launch.

In terms of zkEVM upgrades, EVM compatibility is improved through precompiled upgrades, efficient on-chain verification through proof compression and aggregation, and enhanced circuit integrity. In terms of bridge upgrades, Gas costs can be reduced by up to 50%, and a trustless message relay function is introduced between L1 and L2, eliminating the need for trusted relayers. In terms of infrastructure upgrades, by introducing the EIP-2718 transaction type L1MessageTx for trustless messaging, we get rid of the trusted centralized relayer. In addition, the simplified circuit capacity checker prevents proof overflow, and the coordinator is also enhanced Function.