This page shows how to install Symfony 2.7. So the example is outdated.

Should it be changed to the next LTS3.4 or major release4.0 instead? We may show as an exemple3.3 today but the page will need to be updated after every release, every 6 months.

The page may also be improved by adding a link to theroadmap orreleases so that users know what unstable versions are available.