http://www.ign.com/articles/2013/11/06/assassins-creed-unlikely-connors-story-will-continue-modern-day-assassin-doubtful
In a Reddit AMA Assassin’s Creed IV: Black Flag lead writer Darby McDevitt has answered several questions pertaining to Assassin Creed III’s Connor and the future of the Assassin’s Creed series.
On whether players would receive closure on Connor’s story (along the lines of Ezio’s final chapter in the short film Assassin’s Creed Embers) McDevitt confirmed nothing was presently on the agenda.
“Not at this time,” he wrote. “Embers took [six] months to make. [I]t was a big project, and beloved by all, but those teams are busy with other things right now. But we loved the project, so maybe we'll go that route again one day.”
McDevitt also confirmed it was “not very” likely that Connor’s story will be continued in another game in the future.
As for whether there would ever be a game that focused on a modern day assassin, McDevitt explained that was also unlikely.
“I doubt we would do a modern day AC,” wrote McDevitt. “There are just too many mechanics we would have to develop to make it [believable] ... vehicles, plausible modern cities, a huge array of ranged weapons, etc.”
“The modern day will most likely remain as a ‘context’ for all future games, something to tie them all together.”
McDevitt added he felt, “Watchdogs will scratch the itch for a modern day AC. Just wait!”