The Symfony blog has posted an update from the perspective of the documentation for the framework. Their "year in review" includes details for each section and the updates made.
2014 has been the busiest year in the entire history of the Symfony Documentation thanks to the amazing work of our documentation managers (Ryan Weaver, Christian Flothmann and Wouter De Jong) and the hundreds of documentation contributors.
They also talk about the best practices book, the new quick tour and Fabien Potencier's own How to Create Your Own Framework series. Among the list of their top ten most popular pages are the docs for:
Check out the full post for the rest of the list and what changes were made in each section.