Andrew Pulver “Star Wars: Episode VIII has an official title: The Last Jedi” https://www.theguardian.com/film/2017/jan/23/star-wars-episode-viii-official-title-the-last-jedi-carrie-fisher-mark-hammill
Star Wars: The Last Jedi is written and directed by Rian Johnson, and stars Mark Hamill and the late Carrie Fisher alongside series newcomers Adam Driver, Daisy Ridley and John Boyega. It was revealed that Fisher had finished shooting her scenes on the film before her death in 2016*3.
Star Wars: The Last Jedi will be released on 15 December.
Ben Child “Could The Last Jedi's title bode well for Star Wars' spirit of invention?” https://www.theguardian.com/film/2017/jan/23/star-wars-the-last-jedi-title-mark-hamill
*1:Mentioned in http://d.hatena.ne.jp/sumita-m/20151202/1449074591 http://d.hatena.ne.jp/sumita-m/20151207/1449456332 http://d.hatena.ne.jp/sumita-m/20160108/1452219494 http://d.hatena.ne.jp/sumita-m/20160121/1453388702 http://d.hatena.ne.jp/sumita-m/20160205/1454642252 http://d.hatena.ne.jp/sumita-m/20160212/1455290057 http://d.hatena.ne.jp/sumita-m/20160215/1455464811 http://d.hatena.ne.jp/sumita-m/20160814/1471167213 http://d.hatena.ne.jp/sumita-m/20160817/1471441312
*3:See Catherine Shoar “Star Wars insiders to plot life in Leia-less universe after Carrie Fisher's death” https://www.theguardian.com/film/2017/jan/06/star-wars-braintrust-to-plot-life-in-leia-less-universe-after-carrie-fishers-death