Other enhancements include built-in support forACF, a dedicated slider plugin with supporting theme styles, remote updates and much faster page loads.
Developer Bonus: If you love SASS, you'll also find a bundled
Grunt/SASS/LiveReload workflow for local development.
What About Existing Orion Installations?
If you're using the old version, you're going to want to treat this
version as a completely separate theme. The good news is that your
customizations will be visible in realtime and you should be able
to get up and running fairly quickly.