tl;dr: Modular has released Mojo 1.0, marking the language as a stable, production-ready foundation after two years of development, with future 1.x changes expected to be primarily additive. The release consolidates syntax (unified `var` declarations, single Pointer type, unified closures), adds Python-style lambdas, improves LSP reliability, and introduces memory safety diagnostics. Modular reiterated its plan to open-source the Mojo compiler and toolchain in 2026, while the accompanying MAX 26.5 update adds support for GLM-5.2 and Nemotron-H models.