In a new article to his Medium.com site Jerzy Zawadzki talks about why he things that Symfony 4 is "the new hope" for the framework. In the article he goes through the updates in their major version including code examples, commands and descriptions on each.
On November 30, 2017 new version of Symfony Framework has been released and it looks like core team followed the Star Wars numbering pattern, as 4th version is much better, leaving previous three behind as they look like ‘prequels’ now.
In this article, I will try to sum up all important changes made in Symfony 4, so if you are familiar with Symfony 3 and want to get known with new version? - ?this article is for YOU!
He talks about the changes in developer experience that come along with version 4 and updates to the installation process to make it even simpler. He lists out the packages that are installed in this new version and what's included by default. He then walks through the addition of other packages and tools, pulled in as custom options. Finally he talks about bundles, their use in Symfony 4 and the changes in how applications are structured based on their use.