A note to developers,
The functionality of webhooks is now available on progressions for companies, contacts, prospects, jobs, issues, and contracts. This allows webhooks to be dispatched when a progression between two statuses on one of these objects is triggered.

Create Progression Action Button

Create Progression Webhook Form
Currently these webhooks are only available through the web application, but there are plans to introduce them to the API. The documentation for webhooks may be found
here.