Its not going to be, but I wish it
was, at least the last taking place in this particular chronology. Skyrim should end on an epic, world-changing, metaphysical event that transcends the gaming experience and is impossible to follow. The next games could take place prior to it - theres certainly no shortage of time to cover.
From the Sermons:
Late is the lover that comes to this by any other walking way than the fifth, which is the number of the limit of this world.
Ending on the fifth game would be beautifully poetic, in my mind.