The developer team has recently released new features for LangGraph.js and LangGraph Python, aimed at improving low-level workflows and prebuilt agents. Node caching allows reducing redundant computation by storing results of individual nodes, while deferred nodes enable postponing execution until all upstream paths complete. Pre/Post model hooks provide customizable message flow for pre-built ReAct agents, enabling better control over message history and human-in-the-loop interactions. Builtin provider tools like web search and Remote MCP are now available with the prebuilt agent. Additionally, improvements have been made to LangGraph JS v0.3, including resumable streams, devX enhancements, such as type-safe `.stream()` method, and reduced boilerplate for constructing simple workflows.