The Supreme Court of Texas is the court of last resort for civil matters (including juvenile delinquency which the law considers to be a civil matter and not criminal) in the state of Texas. A different court, the Texas Court of Criminal Appeals, is the court of last resort for criminal matters in the State of Texas.

Based on the paragraph above can we conclude that "Matters may also be heard that don't belong to one of these categories."?
It's impossible to say