Google has announced an enhancement of the rich snippets features. Now the integration of various product data and shop data like prices and availability of products is supported by Rich Snippets. Furthermore product reviews may become an addon to product information. This will enrich the product information provided within search results and for sure increase the ongoing growth of the popularity of rich snippets. Further information about the new features is available by the following official Google blog post.

Rich snippets for shopping sites

Directory Sources: Search Engine Marketing – Search Engine Optimization – Semantic Web