The latest teaser for The Elder Scrolls VI: Sentinel ends with a lore quote dated 4E 206, sparking player discussion about the story's timeline. Since The Elder Scrolls V: Skyrim takes place in 4E 201, some players speculate that the new game may be set only five years after its predecessor.
This quote is attributed to Yazar, a Moth Priest serving Queen Irande of Hammerfell. If the interpretation of "five years later" holds true, the Dragonborn's deeds in The Elder Scrolls V: Skyrim, the outcome of the Civil War, and the pressure exerted by the Aldmeri Dominion on the Empire and surrounding regions could still be recent memories across Tamriel.
Hammerfell borders Skyrim, Cyrodiil, and High Rock, and has transitioned from an Imperial province to an independent political entity. This setting also opens up further player discussion on possibilities such as dragons crossing borders, regional trade, and political conflicts.
However, 4E 206 can only be confirmed as the year the quote was recorded, not necessarily proving that the main game takes place in the same year. This text could be excerpted from a historical book, or it might be a prophecy that will only come true in a more distant future.
There is approximately a two-hundred-year gap between the stories of The Elder Scrolls V: Skyrim and The Elder Scrolls IV: Oblivion, so Bethesda may once again employ a significant time jump. "Five years later" is merely a speculation by players based on the teaser text; the official timeline for the new game's story has not yet been announced.