Core language and library improvementsFirst released in Go 1.24 as an experiment and then graduated in Go 1.25, the new testing/synctest package significantly simplifies writing tests for concurrent, asynchronous code. Secure software developmentGo continues to strengthen its commitment to secure software development, making significant strides in its native cryptography packages and evolving its standard library for enhanced safety. Furthering the software development stackGo is about far more than the language and standard library. It’s a software development platform, and over the past year, we’ve also made four regular releases of the gopls language server, and have formed partnerships to support emerging new frameworks for agentic applications. This SDK supports both MCP clients and MCP servers, and underpins the new MCP functionality in gopls.