The good news is the HP will be at least 400 hp, let's hope the weight is good.
The horsepower will be over 400 hp and will have a lot more torque than the previous M3s, being a V8. Let's hope it will weigh close to 3400 lbs. That's a power to weight of 8.5 lbs/hp, which would be really nice.
This is all speculation, but somehow just chatting about the car helps with the wait, at least it feels like it does. Maybe forgetting about it until it arrives is the best way to "deal", there really is nothing we can do to expedite the release.