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The third Resident Evil movie will be releasing on May 27, 2017 in Japan. It's starring Leon Kennedy, Chris Redfield, and Rebecca Chambers. The new villain is a man named Glenn Arias (sp?), who has created a new strain of virus that can tell friend from foe. He claims to want "revenge", but it's currently unknown what it is.
Matt Mercer confirmed to me that he's doing Leon's voice in the film. It sounds like Roger Craig Smith and Stephanie Sheh reprised their roles as Chris and Rebecca, though they noticeably sound a bit different. Roger Craig Smith and Stephanie Sheh both confirmed over Twitter they are not reprising their roles, unfortunately. D.C. Douglas sounds like the voice of Arias to me.
The third Resident Evil CGI film will be releasing next year in 2017, confirmed to be titled Resident Evil: Vendetta (http://gematsu.com/2016/03/new-resident-evil-cgi-movie-titled-resident-evil-vendetta?utm_source=twitterfeed&utm_medium=facebook).
The film will, once again, star Leon S. Kennedy, and it has a tie-in with Italian motorcycle manufacturer Ducati, where in one of the major action scenes in the film, Leon will be riding their newest series bike, the XDiavel.
Article also announces most of the staff of the movie.
Only other info we know about it right now is that it was confirmed previously that both Chris Redfield and Rebecca Chambers will be making appearances in the film (making it the latter's first actual appearance since 2002's Resident Evil Zero).