You're going to have to wait a while to see anything. WFIRST won't even launch until the mid-2020s, so the circa-2018 James Webb telescope will be as good as it gets for a while. When it does get going, however, it'll provide a more comprehensive view of space that will not only detect more alien worlds, but improve our understanding of the universe's shape. It'll also provide more insights into the natures of dark energy and dark matter, potentially solving mysteries that have existed for decades.