Falcon 9 is now known to be capable of hauling 50,265lbs to low Earth orbit, up from just shy of 29,000 pounds. The Falcon Heavy, meanwhile, will carry 119,930lbs instead of the previously promised 116,845lbs
user-inactivated:
Translation: they intentionally under-reported the weight limits in case they could not meet their targets. The added benefit is that they can now loft two paying customers per flight, and still return a first stage to the ground for reuse.