Although there have been cases of remission without rheumatoid arthritis treatment, these are not common. Most people with rheumatoid arthritis experience some progression of their disease during their lives.
But there are treatments that can help, and each person responds to the disease differently. What can you expect? That depends on many factors.
How advanced your rheumatoid arthritis is at the time you are diagnosed
Your age at the time you are diagnosed
How "active" your disease...