Outlander presumably won’t run out of source material any time soon.
Since Diana Gabaldon is still working on Book 9, fans will probably have to wait for a while to “see” for themselves.
The big question — other than, of course, whether or not Claire survives — will be whether Gabaldon will finish the tenth and final book before the TV show catches up.
With the end of Season 5, the Starz adaptation of the Outlander saga has finished covering the events of the first five books, with the finale even including some of the devastating events from the sixth book.