A First Public Working Draft of Strings on the Web: Language and Direction Metadata was published.
This document describes practices for identifying language and base direction for strings used on the Web. It was developed as a result of observations by the Internationalization Working Group over a series of specification reviews related to formats based on JSON, WebIDL, and other non-markup data languages. Unlike markup formats, such as XML, these data languages generally do not provide extensible attributes and were not conceived with built-in language or direction metadata.
Public comments are welcome, please raise them as github issues.