Statement on the US government directive to suspend access to Fable 5 and Mythos 5
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.
Gentoo Penguin (Pygoscelis papua) waddling along on a white sand beach.
New Native Foundation and Major Performance Gains
TypeScript 7.0 Beta introduces a compiler and tooling foundation ported from TypeScript to Go rather than rewritten. By combining native execution and parallel processing, Microsoft reports performance improvements of roughly 10× over TypeScript 6.0 while preserving existing type-checking behavior and compatibility.
Easier Adoption with Side-by-Side Migration
The beta ships as @typescript/native-preview and uses tsgo, allowing teams to evaluate it without replacing existing TypeScript setups. Microsoft emphasizes production readiness, broad internal and external validation, and editor support through the Native Preview extension.
Parallel Builds and Updated Defaults
TypeScript 7.0 adds configurable parallelization through –checkers and –builders for faster type-checking and project builds. It also adopts stricter defaults and removes several deprecated options, encouraging projects to modernize configurations before stable release.
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