Cardano releases node 11.1.1 ahead of Dijkstra hard fork

Cardano has released node version 11.1.1, marking the first of four planned milestones ahead of the major Dijkstra hard fork. The update addresses memory and operational issues. Intersect has projected a moderate-confidence enactment window between December 5, 2026, and January 4, 2027, alongside a high-confidence window in early 2027. The transition requires on-chain governance approval and will introduce features like Nested Transactions and Linear Leios.

Cardano node 11.1.1 release

• ▪Cardano node version 11.1.1 is available in standard, AMD64, and ARM64 versions through Intersect's official GitHub container registry.
• ▪Cardano released node version 11.1.1 during the weekend ending September 6, 2026, as a maintenance and preparation update ahead of the Dijkstra hard fork.
• ▪Cardano node version 11.1.1 removes the legacy tracing system, addresses Genesis-related operational issues, and resolves increased resident memory use observed in node version 11.1.0.

Dijkstra hard fork roadmap

• ▪Intersect's high-confidence timeline places the Cardano Dijkstra hard fork enactment between February 24, 2027, and March 26, 2027, if the earlier schedule cannot be met.
• ▪Cardano node version 11.2 is expected within approximately one month of Intersect's September 5, 2026 update, containing most Dijkstra features for testing while excluding Leios consensus components.
• ▪Cardano node version 11.3 is expected within one to two months of Intersect's September 5, 2026 update to serve as the Dijkstra hard-fork release candidate containing Linear Leios.
• ▪Intersect's moderate-confidence timeline places the Cardano Dijkstra hard fork enactment between December 5, 2026, and January 4, 2027, pending technical readiness and governance approval.

DijkstraNet public testnet launch

• ▪DijkstraNet is expected to support public testing of Plutus V4, Nested Transactions, and CIP-50 parameters.
• ▪Intersect plans to launch a public test network called DijkstraNet after Cardano node version 11.2 becomes available to test the broader protocol version 12 feature set.
• ▪Nested Transactions on Cardano would allow one transaction to contain other transactions while preserving separate validation conditions to support complex multi-party workflows.

MusashiNet Leios consensus testing

• ▪The live Cardano test network MusashiNet concentrates on testing Leios, consensus, and block production.
• ▪DijkstraNet will operate alongside MusashiNet to allow ledger features and the new consensus architecture to progress in parallel before converging in the final hard-fork candidate.

Governance approval requirements

• ▪The van Rossem hard fork in July 2026 moved Cardano to protocol version 11 as the network's first mainnet hard fork enacted entirely through the current on-chain governance framework.
• ▪The Cardano network cannot activate the Dijkstra hard fork without on-chain governance approval of the required constitutional and hard-fork actions.
• ▪A constitutional change for the Dijkstra hard fork requires approval under Cardano's governance rules, followed by a separate hard-fork initiation action supported by delegated representatives, stake pool operators, and the Constitutional Committee.

Peras Phase 2 timeline

• ▪Phase 2 of the Cardano Dijkstra plan will activate Ouroboros Peras through a separate intra-era hard fork targeted for the second quarter of 2027.
• ▪Ouroboros Peras adds stake-based voting on recent chain tips to accelerate settlement confirmation on the Cardano network.

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