I don't think Star Wars will end here... in 2007/2008. It's become legendary, just like Star Trek since the 1970's.
Perhaps, George will give up, but he will select his followers to continue what he started. As for K3 we don't know, but maybe the movies will come out in 2 or 3 years so we're just suggesting what may happen in the future...
"The future reserves all our answers" - Me