The 2025 Solidity Summit in Buenos Aires brought together 350 participants to discuss the language's evolution. Key announcements included the ongoing compiler backend overhaul delivering immediate performance improvements like faster compilation and stack-too-deep error resolution. The team clarified that Classic and Core Solidity represent a unified roadmap rather than separate languages, with Core introducing features like generics, algebraic data types, and first-class functions while maintaining interoperability with Classic through cross-language imports. Sessions covered compiler modernization, the new Yul → SSA-CFG → EVM architecture, tooling advances, security workflows, and ecosystem developments including Hardhat 3 and alternative implementations like Solar and solx.
Table of contents
Introductory RemarksClassic & Core Solidity: One Interconnected RoadmapA Strong Focus on the Compiler BackendAdvanced Solidity Concepts & Compiler ResearchTooling and SecuritySort: