In 10 years, (2016-17) the proposal is for a $2-3 billion New Worlds Observer. It would be 150m in size. It would have two starshades. It could detect life on earth size planets by analyzing the spectroscopy.
Then for 2025, the New Worlds Imager. Lunar based or in space system that would have 1500km long baselines.
These are great systems that should be developed.