It feels like spring has sprung here, and so has a new NVIDIA integration, ticket sales for Interrupt 2026, and announcing LangSmith Fleet (formerly Agent Builder).

Langchain is a publication focusing on programming languages, language design, and compiler development. Readers can explore articles covering topics such as language features, syntax design, and compiler optimization techniques. Additionally, they can learn about programming language theory, language implementation challenges, and practical applications of language design principles.

LangChain

LangChain's March 2026 newsletter covers major product updates including: LangSmith's AI assistant Polly reaching general availability, Agent Builder rebranding to LangSmith Fleet with new identity/permissions management, Skills for agents, LangSmith Sandboxes in private preview for secure code execution, a new Deploy CLI for LangGraph, ABAC enterprise access controls, and Audit Logs. On the open source side, langgraph v1.1 and deepagents v0.5.0 alpha were released. The newsletter also announces Interrupt 2026 conference (May 13-14, SF) featuring Jensen Huang and Andrew Ng, an NVIDIA enterprise partnership, and upcoming community events.

March 2026: LangChain Newsletter