There will be no more cinematically released Star Wars movies. However, 2 television shows are currently in production, one cartoon and one live action. Few details are known about the live action television show yet, other than that George Lucas's plan is to make at least 100 hours (which translates as roughly 5 television seasons). He has also said that further "spin-off" shows are possible.
The Star Wars universe also keeps expanding through comics and novels.