Read all about Drupal 7 End of Life on the official Drupal site here.
Read more about Forking Drupal here.
When I started working with Drupal around 2005 I remember looking at other CMS systems: zope, plone, WordPress, etc. From my assessment back then, Drupal was the horse to choose. I'm pleased that my choice was the right one for my clients and for me.
Drupal 7 is a super solid system that, as of this writing, still powers a phenomenal 260 thousand websites. Yup, the large central red area is Drupal 7 installs! Check the latest numbers at https://www.drupal.org/project/usage/drupal.
