Read this great announcement from the MIT App Inventor team.
Thunkable users are encouraged to take part in this Hackaton and participate as an individual or a team.
Read the Hackaton page carefully and after you want to participate you can use the following link.
Please fill this form as accurately as you can. If accepted to participate in the Hackathon 2020, you will receive a confirmation e-mail with details about the Hackathon.