Node.js 24.15.0 'Krypton' LTS has been released with several notable changes: a new --max-heap-size CLI option, require(esm) and module compile cache marked as stable, raw key format support added to KeyObject crypto APIs, a throwIfNoEntry option for fs.stat, HTTP/1 fallback configuration for HTTP/2, setTOS/getTOS added to Socket, SQLite marked as release candidate with a new limits property, C++ support for diagnostics channels, and improvements to the test runner including worker ID exposure and SIGINT handling. The release also includes numerous bug fixes across streams, crypto, HTTP, ESM, and buffer modules, plus dependency updates including npm 11.12.1, SQLite 3.52.0, and updated root certificates.