According to official Base announcements, its first independent network upgrade, Base Azul, has launched on testnet and is scheduled to activate on mainnet on May 13, 2026. Azul will enhance security, performance, and developer experience by enabling a multi-proof mechanism, making base-reth-node the sole execution client, and aligning with the latest execution layer specification, Osaka, to remain synchronized with Ethereum. No user action is required. Additionally, Base plans to roll out performance and user experience upgrades at the end of June and August, and will launch the developer public network Base Vibenet in mid-May.
Base Azul Testnet Launches, Mainnet Activation Scheduled for May 2026
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Summary
Base has launched the testnet for its first network upgrade, Base Azul, with mainnet activation scheduled for May 13, 2026. The blockchain upgrade includes a multi-proof mechanism, base-reth-node as the sole execution client, and the Osaka execution layer specification. No user action is required. Base will also roll out performance upgrades in late June and August, and launch the public developer network Base Vibenet in mid-May.
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