Tex. Nat. Res. Code § 85.254
The appeal is returnable at once to the appellate court and the action appealed shall have precedence in the appellate court over all cases, proceedings, and causes of a different character that are pending.
Acts 1977, 65th Leg., p. 2525, ch. 871, art. I, Sec. 1, eff. Sept. 1, 1977.