The case is National Rifle Association of America v. McCraw.
Issue: (1) Whether the Second Amendment right to bear arms for self-defense in case of confrontation includes the right to bear arms in public; (2) Whether that right to bear arms extends to responsible, law-abiding 18-to-20-year-old adults; and (3) whether Texas’s ban on responsible, lawabiding 18-to-20-year-old adults bearing handguns in public for self-defense violates the Second Amendment and the Equal Protection Clause.
The McGraw mentioned in the case is Steven McGraw, Director of the Texas Department of Public Safety. No certainty the Supreme Court will choose to hear the case. Good Second Amendment material besides - this might even though on age discrimination, though that's not the question presented before the court.