Former President Trump has now appealed the recent ruling by the 11th Circuit in the Mar-a-Lago Seizure Case to the Supreme Court. [His "Application to Vacate" the 11th Circuit ruling is here.] The application now goes to Justice Thomas—the designated Circuit Justice for the 11th Circuit—who will almost certainly refer it to the full Court for disposition.
The emergency appeal is based on some VERY gnarly and complicated jurisdictional and procedural rules, about which I am no expert. But it doesn't look to me like the ex-president's case is a terribly strong one.
Here are the basics. Judge Cannon, you will recall, issued an "Order" this past August, "authorizing the appointment of a special master" to review the seized documents, and "temporarily enjoining the Government from reviewing and using the seized materials for investigative purposes pending completion of the special master review."