The JSON-LD Working Group has published the following specifications as W3C Recommendations:

• JSON-LD 1.1—This specification defines JSON-LD 1.1, a JSON-based format to serialize Linked Data. The syntax is designed to easily integrate into deployed systems that already use JSON, and provides a smooth upgrade path from JSON to JSON-LD. It is primarily intended to be a way to use Linked Data in Web-based programming environments, to build interoperable Web services, and to store Linked Data in JSON-based storage engines.
• JSON-LD 1.1 Processing Algorithms and API—This specification defines a set of algorithms for programmatic transformations of JSON-LD documents. Restructuring data according to the defined transformations often dramatically simplifies its usage. Furthermore, this document proposes an Application Programming Interface (API) for developers implementing the specified algorithms.
• JSON-LD 1.1 Framing—This specification allows developers to query by example and force a specific tree layout to a JSON-LD document.

Original source: https://www.w3.org/blog/news/archives/8636