Wasn't expecting to see this so quickly but Brabus has already managed to tune the new A-Class hatchback. The new tune increases the stock 2.0l 4 cylinder by 46hp and 59-lb ft of torque, which is more than what you would get in the AMG A35 model. This has been doing with a larger air duct, retuned pressure control and a reprogrammed ECU. A Brabus tuned A250 can now to a 0-60 sprint in just 5.9 seconds. No word on pricing.
Brabus always delivers with their kits and I really like the aesthetic tweaks that they've made as well. If this version is even more capable than the AMG model, then my best guess is that it will be more expensive than it.