For those that aren't overly familiar with Drupal, it's an open source web development and content management platform that publishes, manages and organizes a wide variety of content on websites. Tens of thousands of people and organizations are using Drupal.
With the release of Acquia Drupal with its streamlined packaging of Drupal and a support system via the Acquia Network, there will definitely be a tremendous increase in Drupal developers and websites powered by this Drupal.
All subscribers to the Acquia Network will gain access to the Acquia Network's subscriber forums, remote network services such as software update notifications, uptime monitoring, Mollom spam blocking, and Acquia Drupal documentation.
What all this means is that many more companies, especially enterprise class entities, will be much more willing to dip their toes in the Drupal pool now that there's a commercial grade package available that includes tech support. If all this sounds familiar, you're probably thinking about Linux and how similar its path has been to the corporate world. At one point, only extreme geeks used Linux, until some big names like IBM and Novell started proving technical support plans with their Linux offerings. That allowed larger companies to try Linux much the same way they will try Drupal thanks to the Acquia partnership and support offering.