I ordered my Model X on 1/30 and took delivery on 3/12. My SA and DS both told me I will get FSD for free before delivery. My DS told me it will upgrade automatically within two weeks; however, I could still see the option to pay to upgrade to FSD yesterday, so I decided to call customer service. I followed up the status this morning with online chatting (he asked me for the screenshot of text message from my SA), after 10 mins waiting, he told me FSD has attached to my vehicle and suggested me to call service center to confirm it. After conversation with service centre, I confirmed I got FSD for free.