We doubt that Chrysler is building a Demonized version of the 300, but the tires do suggest that this is a much more potent 300 than the current SRT, which was discontinued in the US in 2015 but is still sold in the Middle East and Australia. That's not all we have to go on, though, since our spy photographer says it sounded like it had Hellcat power under the hood. Equipping a 300 with a Hellcat engine would be a breeze, too, since the engine is already in the Charger, which is virtually identical mechanically.
What you may be wondering is why Chrysler is adding a Hellcat version of the 300 SRT when that model hasn't been available in the US since 2015. One possible reason is that this would finally allow Aussies access to the 707-horsepower machine. Dodge is not a brand offered Down Under, so it doesn't get the Charger Hellcat, leaving the 300 as the only V8, rear-drive Mopar available. And for the Middle East, if the normal 300 SRT was selling well, it would only make sense to offer another variant. It shouldn't cost Chrysler too much to develop this model either, since the 300, mechanically, is virtually identical to the Charger.