It's planned, but no firm ETAs on these types of changes. Just to be clear, though, using DOI: 10.1234/55676 in the extra field will work across citation styles, is imported from databases that hold those data, and will be migrated to a proper DOI field once that exists.
using DOI: 10.1234/55676 in the extra field will work across citation styles, is imported from databases that hold those data, and will be migrated to a proper DOI field once that exists.