Tex. Code Crim. Proc. art. 46B.0831

A defendant committed to a maximum security unit by the commission may be assessed, at any time before the defendant is restored to competency, by the review board established under Section 46B.105 to determine whether the defendant is manifestly dangerous. If the review board determines the defendant is not manifestly dangerous, the commission shall transfer the defendant to a non-maximum security facility designated by the commission.