How do I purchase Keyshot Bridge? What do I need to use Keyshot with ZBrush?

Keyshot Bridge is now included in ZBrush. A separate purchase is no longer necessary.

After acquiring a Keyshot license from Luxion, the Keyshot integration is already installed with ZBrush and no longer requires a separate license. 

Additional ZBrush assets that can be used with the Keyshot integration are also available from Luxion.