As i've said before, you guys have lost your damn minds if you think we have seen the last of star wars movies. It is a multi BILLION dollar franchise. There is no way in hell it will be over.
I'm not saying they should be made, or that they will be good or anything because they probably won't be. I'm just saying that there is too much money involved for there not to be more.
For those who misunderstand the idea of the original 3 trilogies -
Originally, Star Wars was supposed to be 3 trilogies. Leia was not supposed to be Luke's sister, and Leia's sister was set to appear in the 3rd Trilogy. The Emperor was also supposed to appear first in the 3rd trilogy, and it was focused on Luke's Jedi life.
Back in the day, due to lack of resources and practical issues including time, and due to concepts being developed/modified, the whole idea of 3 trilogies was dropped, and the 3rd trilogy was "compressed" into Ep 4-6, what we call the OT.
So in essense, the 3rd trilogy was an early concept which was abandoned, and the ideas of the 3rd trilogy was added to the OT and the whole thing was finished. Done. Forever. The story ended.
And as others already noted, the man himself said there is not going to be another movie EVER, not by himself, and not by anyone else either. He has said before that he's sealing off the movies for good, and recently at the AFI award ceremony he said it as clear as it gets - there will not be another one, ever.