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(Ready in version 4.2)
1. Draft and live forms
When you want to change a form, you can now edit a “draft” version of the new form until you're happy with it, and only then “publish” it as a new live form. You can also set the new form to take effect on a given future date.
2. Alt forms (A/B testing)
Sometimes, you may want to have more than one version of a form in use at the same time, often selecting between the alternate versions at random. This allows you to see how the different characteristics of the alternate versions affect user behaviour.
Using the features
In the Manage Forms screen, there is a new Versions column, which will show the current live version of the form, along with any draft in progress and all current or future alternate (alt) forms. The form editor is launched by clicking on the appropriate link.