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Input Output Global (IOG), the company behind Cardano’s core blockchain development, shared new details on Wednesday on how it plans to steer the network through the rest of the year. The update outlines key proposals and a broader 2030-focused roadmap aimed at scaling Cardano’s transaction capacity from roughly 800,000 transactions per month today to as many as 27 million per month.
IOG framed the next phase as part of the 2026/27 cycle, with a key priority on moving the Cardano Leios upgrade from an early-stage prototype into readiness for mainnet deployment. The work is organized around progressing through what it calls Software Readiness Levels 5 to 8, a framework intended to ensure the upgrade is built, tested, and hardened step by step.
IOG said the effort includes major changes under the hood, including a substantial rewrite of consensus components and bringing the Leios block structure into what it refers to as the Dijkstra ledger era.
On verification, IOG pointed to completing the conformance test suite against an Agda formal specification and integrating the update into the primary node implementation.
Beyond moving toward a release candidate, IOG highlighted “High Confidence,” which it described as focusing on validation rather than completion alone. The company said the approach will combine parameter exploration with continuous load testing, along with adversarial testing on the public testnet.
In practical terms, IOG said this includes studying timing parameters and size limits, then building a parameter graduation plan as the system matures.
The third objective is “Hard-fork Enabling Leios,” which IOG described as work within its own control to make the hard fork possible. The firm emphasized that this objective is defined by finishing the preparatory work required for a hard fork, rather than by the hard fork itself occurring on mainnet.
IOG said the enablement tasks include stabilizing client interfaces, producing implementation-independent technical documentation, and coordinating developer workshops to help ensure the wider ecosystem is ready. It also cited a mainnet parameter graduation plan, contingency procedures, and preparation of updated guardrails script and rationale documents for governance.
In IOG’s framing, success is centered on completing these enablement tasks, not on the timing of mainnet activation.
IOG linked the upgrade to broader Cardano network growth, citing downstream effects such as increased total value locked (TVL) and improvements in revenue and adoption. The company’s rationale is that expanding throughput capacity for the network can support fee revenue growth as the Reserve diminishes, strengthening long-term sustainability.
“We have been researching and prototyping Leios for years. The science is done. Now we deliver it. When this ships, Cardano’s throughput story changes permanently.” — Carlos Lopez de Lara, IOG
At the time of writing, Cardano’s native token, ADA, was trading at $0.25, after recording gains of 2% over the last 24 hours and 4% over the last seven days.
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