AngularJS is planning one more significant release, version 1.7, and on July 1, 2018 it will enter a 3 year Long Term Support period.
AngularJS is an extremely stable framework for building web applications, and has been used by millions of developers across the web. Angular is its successor and uses the same philosophies such as declarative templates and dependency injection.
Many developers are still using AngularJS, and that the migration process to Angular takes time and energy.
All AngularJS applications that work now, will continue to work in the future. All published versions of AngularJS, on npm, bower, CDNs, etc will continue to be available.