Thank you for your feedback. We are working on this and the form will be available as soon as possible. The availability date is estimated and the link below will have the most up-to-date estimate of availability.
Use this tool to check availability of forms, including the Form 4684 (Casualties and Thefts Personal Use Property): Tax form availability
Form 1040 is not due until April 15th, but if you believe that you will need additional time, you can request an extension. Here is a link with more information: Free federal tax extension available in March
