On November 8th, a week ago, it was announced by R.V. Guha (Google) that e-commerce schemas from the GoodRelations project would be integrated with Schema.org, effective immediately. GoodRelations is the well-known and widely used e-commerce vocabulary that has been developed and maintained by Martin Hepp since 2002. The decision to integrate the GoodRelations vocabulary with Schema.org was made to make it easier for publishers to bring together existing work under a common model that is supported by major search engines, Google, Bing/Microsoft, Yahoo, and Yandex.
Structured data helps search engines understand what is on the page, provides signals of relevance for search engines, and helps to enhance your search result listings with rich snippets. With this recent integration of GoodRelations and Schema.org, publishers have the opportunity to expose more granular information about their products and services in a way that is supported by major search engines. Publishers using Schema.org can now mark up information to help search engines understand and identify items like product delivery charges, quantity discounts, and product features.
For those e-commerce websites that already utilize GoodRelations, nothing will change, except for the fact that all the major search engines are now supporting its structured data. And for those using Schema.org previously, the type of information that can now be marked up has increased tremendously!