Cardano Plans Major Two Phase Dijkstra Upgrade Cardano (@Cardano) has outlined a two phase rollout for its upcoming Dijkstra era. Phase one targets Q4 2026 code completion and will activate Ouroboros Linear Leios. The upgrade is designed to increase throughput using supplementary Endorser Blocks. It will also introduce nested transactions, guard scripts, and improved account addresses. Phase two is planned for Q2 2027 and will activate Ouroboros Peras. Both phases must pass testing and on chain governance before mainnet activation.

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History made on @Cardano! For the first time, a major Layer 1 blockchain upgraded its protocol entirely through on-chain governance. The Van Rossem hard fork activated Protocol Version 11 with: • No downtime • No wallet updates • No token swaps • No founding company steering the decision Instead, DReps, stake pool operators, and the Constitutional Committee collectively approved the upgrade, proving that decentralized governance can work at production scale. Beyond governance, the upgrade also introduces new Plutus capabilities, lower smart contract execution costs, and lays the groundwork for Ouroboros Leios, Cardano's next major scaling upgrade. Read our full breakdown here: