I think we are not going to see Apple Script at least in the way it was. Bridging Electron with Apple Script is too mac-specific and I dont think that Evernote is goig to invest that time.
What we can see is general automation via Javascript scripting, a la Omnifocus with Omni Automation, that is leveraging Apple-approved Javascript engines already available on Macs and iOS.
This would be a win for EN, as scripts would be portable across platforms.