Has there been a permanent cure developed for schizophrenia yet?

No: Medications decrease or even eliminate many of the symptoms, but it is still a chronic, progressive illness. It is a syndrome with many possible causes. Some cases may be prevented in the future by genetic studies, but not all cases are genetic. Cure implies reversing the process which is less likely.

No-But Can Live Well: See: "family of many schizophrenia patients report positive personal growth" http://psych.Ly/10fyyxr via @psychcentral having a strong network of people in your life is a huge factor in how well people diagnosed with schizophrenia are able to manage their symptoms and live well.

Schizophrenia : Unfortunately as of now, there is no cure for schizophrenia, only medication management and psychotherapy throughout the lifespan.