Release , platforms for running high-performance network applications in JavaScript. Node.js 12.0 belongs to the long support branches, but this status will be assigned only in October, after stabilization. Updates for LTS branches are released for 3 years. Support for the past LTS branch of Node.js 10.0 until April 2021, and the previous LTS 8.0 branch until January 2020. Support for the Node.js 11.0 staging branch will end in June 2019. The lifetime of the LTS branch 6.0 will end on April 30th.
The improvements in Node.js 12.0 include updating the V8 engine to version 7.4, cleaning up deprecated APIs, supporting TLS 1.3 in the tls module and disabling TLS 1.0/1.1 by default, strengthening security and checking the size of allocated memory in the class , strengthening argument checks in the child_process, fs and assert modules, deleting deprecated handlers in the crypto module, switching the http module to a parser , translating lib to use ECMAScript 6 style when inheriting classes.
Source: opennet.ru