It can't be the last.
Episode Six left with Luke
as the lone Jedi
in the galaxy,
for practical purposes
Luke had just replaced
the emperor as
the only human who can
use super powers
to accomplish things.
Obviously this will cause
problems, in Luke's mind
and with "normal" folk
so all the empire's problems
are still around, just
with a young blond guy
instead of a gross old guy.
In Hollywood terms,
that "happy ending"
lasts till the guy ages, or
the producer needs
more liquidity.
Either way, of course look for
pictures nine thru twelve!