There is a 7, 8 and 9 and it focuses on Leia/Han's and Luke/Mara Jade's kids, the rebirth of the Jedi Order and the rise and fall of everything again (conflicts as the old Empire is rooted out, invasions, second Civil War, Jacen Solo becoming Sith and killing aunt Mara, the birth, rise and fall of Anakin II, etc.). These stories are all told in comics and novels.
Lucas will not be putting this 3rd trilogy into a film format.