"Latest #LifeOnTheRoad posters. Which one's your favourite?" he tweeted Monday.
Three of the posters include the taglines "The Boss is Back," while the last two say, "Live Fast, Die Old."
The images show Gervais as Brent in various costumes, including a business suit with a guitar slung across his back and an unbuttoned white shirt and white fedora. Another poster features him casually dressed in a leisure shirt, torn black jeans and loafers with one leg draped over the arm of a throne.
Life on the Road updates fans on where Gervais' boss-from-hell character David Brent is 12 years after the BBC series The Office ended.
Now a traveling salesman for Lavichem, a cleaning and feminine, personal-hygiene products company, Brent "hasn't given up his dreams of rock stardom and is about to embark on a self-financed UK tour with his band Foregone Conclusion," a synopsis said.
The movie is to open in the United Kingdom and Australia in August. It is set for release via Netflix in the United States in 2017.