The website support form now lets customers attach files when submitting a helpdesk request. This gives support teams more context upfront and adds easier access to related documents from the helpdesk ticket view.

Task : https://www.odoo.com/web#id=35599&view_type=form&model=project.task&action=333&active_id=131&menu_id=4720
Pad: https://pad.odoo.com/p/r.a9af278935bbbb20bfb2a7f4615e9eb1