Is there going to be more Star Wars?

We now know that there'll be a TV series and an animated series set in the Star Wars universe. But is Revenge of the Sith the last ever SW film? The Houston Chronicle has an article examining this.

Before Lucas wrote the script for 1977's Star Wars, he put together a novel-length treatment tracing the intergalactic exploits of Skywalker and son. In the blueprint, the plot spanned beyond Luke's young-adult years to portray him as an elder Jedi.
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According to Kurtz, the possibility of a third trilogy diminished when Lucas veered from his treatment to create Return of the Jedi. The original tale he mapped out didn't feature Ewoks or a second Death Star, and it culminated with the death of Han Solo. Princess Leia parts ways with Luke to lead those who survived her home planet's destruction.

So can we expect to see more movies on the big screen? Who knows? The Force is strong with this franchise...