Last updated January 3, 2016. Created on May 10, 2011.
Edited by YesCT, wolffereast, jcnventura, joe casey. Log in to edit this page.

This handbook provides information and specific steps for upgrading contributed and custom modules from Drupal 7 to Drupal 8. Drupal Module Upgrader can do some of this automatically for you, covering many API hooks.

Should I start upgrading now?

Yes! Drupal 8 was released on November 19th, 2015.

Likely information to apply: a large list of Drupal 8 module and site development resources and videos at PSR-4 autoloader patterns are used in Drupal 8. All change records.

See also converting themes to Drupal 8: (as it's likely you will need theme features as well as module API changes)

Looking for support? Visit the forums, or join #drupal-support in IRC.