This is fantastic news!
> As Emacs and Vim have demonstrated over the past three decades, if you want to build a thriving, long-lasting community around a text editor, it has to be open source.
I agree whole-heartedly. In fact, I don't believe that editors like Sublime Text would have such a large following if not for the extended "free-trial" functionality.
It will be exciting to see where this project goes, and I think open-sourcing the rest of the editor was a great move.