No. There will never be a cure for autism.
Here's why:
To create a cure, we would have to know the genetic basis for autism. When we know the genetic basis for autism, a prenatal test will be developed that would allow autistic fetuses to be aborted. When that happens, funding for cure will vanish. This is a known pattern: When a prenatal test is found, research for cure stops.
Secondly. Autism is a neurodevelopmental disorder. Autistic brains are different from neurotypical at every level, microscopic and macroscopic. Your brain, and the way it connects, is YOU--your memories, your personality. To change that at such a global level, to remove the autistic connections and add in neurotypical ones, would also erase all your memories, all your skills, all of your personality traits. You would end up with a blank brain, a second infancy, and a neurotypical person wearing your face. If a person is the sum of the information stored in their brain, then to change an autistic person to a neurotypical one would be like killing the autistic person and letting the NT grow in their place.
We do not have the technology to change the brain at that level. We probably never will, at least not in our lifetimes. It may be possible with nanotechnology, but by the time that is possible, it will also be possible to do things like copy yourself from one brain into another. At that point we'll have more trouble than just the question of whether to cure autism.
But long before that, autism will be addressed by a prenatal test and widespread eugenic abortion. There will always be autistic people, because quite a few people won't get tested or won't abort just because their child might become autistic. But there will be fewer of us. Unless, that is, we can impress on the world that being autistic is okay--that aborting someone because they're autistic is about as bad as aborting because they're a girl.
The focus on a cure really hurts autistic people. If we sit around wanting a cure, we aren't living our lives. We let people tell us that we can't really live until we're magically NT. The focus on a cure means that therapy tries to normalize children instead of teaching them useful things. It causes people to devalue themselves for being disabled, as though disability were shameful. We can be happy just as we are, but the belief that a cure is a prerequisite for happiness will block us from even understanding that the possibility of happiness exists.