If you select this new editor, which may pop-up in your blog dashboard you are LOCKED IN — even though the new editor is still in beta. There is a PLUGIN that will enable you to switch back but you can’t use Plugins on ‘Free’ WordPress.com blogs. That is inexcusable.
I could NOT make head or tail of the new editor. It was way too confusing. And I could not switch back.
So, I have given you a heads up. You have been warned.