Tex. R. Disc. P. 12.07
A final judgment of the Board of Disciplinary Appeals denying a petition for reinstatement may be appealed to the Supreme Court. If such an appeal is taken, it must be filed with the Clerk of the Supreme Court within fourteen days after the receipt by the appealing party of the determination of the Board of Disciplinary Appeals. Except as herein expressly provided, an appeal must be made pursuant to the then applicable Texas Rules of Appellate Procedure. Oral argument may be granted on motion. The case shall be reviewed under the substantial-evidence rule. The Court may affirm a decision of the Board of Disciplinary Appeals by order without written opinion. A final judgment of a district court denying a petition for reinstatement may be appealed as in civil cases generally.
Tex. R. Disc. P. 12.07