so, it's not like the whole thing about the Holy Grail Wars is over now.
what I don't know is if Saber is still considered a useable Hero for the Holy Grail War...
She accepted what happened in her live and ordered Bedivere to return Excalibur to the Lady of the Lake and her life ended... so she doesn't desire the it anymore, right?..
(because of her spirit which fought in the holy grail wars and eventually became Shirou's servant)
So the next War might be with a different pool of heroes to choose from, but I don't know if it is possible for Saber to delete the contract she made with the Holy Grail or if her spirit really has to fight forever, even if she doesn't want the Holy Grail anymore.