The key features of Angular 8 are as follows:
a) Differential Loading to create two different production bundles of your app.
b) New Dynamic Lazy Loading modules for imports.
c) Supports Web Workers.
d) Supports TypeScript version 3.4.
e) Availability of New Workspace APIs and Builder.
f) Bazel Support.
g) Opt-In usage sharing.
h) Ivy Rendering Engine: The new compiler for Angular version 8.
ngUpgrade improvements.