Initially Angular JS was released in October 2010. It was MVC and MVVM based architecture.
Angular Version 2 was released in September 2016. Completely rewrite which is providing Component based UI and service/controller architecture. After this release, there were few new versions coming below which has introduced new features and improvement related to performance.
Angular Version 4 was released in March 2017.
Angular Version 5 was released in November 2017.
Angular Version 6 the latest released in May 2018.