The Hero of Skyrim is the Last Dragonborn, so that would be very unlikely, unless TESVI is set as a prequel to TESV: Skyrim.
He/she's not the last most likely, The greybeard said, It is unknown if you are the last dragonborn in this era. If there were others they didn't reveal themselves yet. So he/she could make babies, family is alive or there are others. You probs (Everyone got a lore backstory) didn't know you were dragoborn until you killed a dragon at the western watchtower, so others didn't get the chance to be badass. Oh yeah, Dovakin got claim to Septim Line motherfreaker. Time to bash deez nuts and working butts against the thalmor.
dude if you play dragonborn dlc you know that you are the last dragonborn. hermeus mora and miraak point that out!
It was the Elder Scrolls that called him the 'Last Dragonborn'. They did not, however, say that that meant anything. It could have been the last dragonborn ever, or the last one to be born ('last' as in 'most recent'), or it could be a reference to the fact that a previous dragonborn (Miraak) was still alive. The dragonborn have proven their usefulness, Akatosh would be an idiot to stop giving His gift.
i would like to have akavir in an ES game, possibly VI. though, it doesn't exactly have to be the dovahkiin to kill tosh raka to him, and i have little thought that alduin would, one, come back, and two, raise that specific dragon when it is clear he has his goals set on tamriel, or at least skyrim. so, even if it was set just a few years after skyrim, much like Arena to Oblivion, it wouldn't have to be the dragonborn playing as the character
The Dragonborn as the main character in ESVI?
A clue: no.
What do you think?