Does anyone know where this new beta feature presents itself?

I would guess its available when selecting View Record from a View that has a Custom template assigned to it in the 'Record Summary' section within the View/Report settings page?

When I try to use this function though any PDF I export is corrupted and will not open in Adobe Reader. Print option seems to confirm my thinking though as it prints the data as set out in the custom template view and can also be used as the default in email templates triggered on form submit.

Anyone else using this? FWIW I'm in accessing ZC via the new interface.