Ethereum developers have revealed a 'Lean Ethereum' roadmap that seeks to simplify the blockchain's base layer while preparing it for post-quantum security. The proposal was discussed by co-founder Vitalik Buterin and researcher Justin Drake during a Berlin conference session.

The plan prioritises three core goals: enhanced security through post-quantum signatures, reduced complexity in Ethereum's structure, and improved efficiency to lower latency and costs.

Developers are already exploring four research tracks, including a three-step-finality protocol, quantum-resistant signatures, zero-knowledge virtual machines, and improved data layering through erasure coding.

Under the broader 'lean' concept, Ethereum may soon adopt lean staking, verifiability for low-power devices, and simplified cryptographic design. Modular logic and formal checks are part of the plan, aligned with zkEVM pilots and inclusion list development.

Although the roadmap doesn't suggest an immediate upgrade, the Ethereum Foundation described it as a cohesive strategy that ties current innovation to long-term resilience. Core teams will prototype components and assess trade-offs in ongoing working group discussions.