The clip is just a little over one minute long, and the first half entails nothing more than Jonah Hex riding a horse and not speaking a word. Seriously.
Bruce Timm's DC Animation Department is including the Jonah Hex Short in with the Batman: Under the Red Hood Movie. That movie looks awesome, and we were already buying that, so at least the Jonah short won't cost us any additional money. But it doesn't look at this point like the Jonah Hex short will come close to matching the first short animated film of The Spectre.