and Douglas Booth (who was in Pillars of the Earth) as Romeo - both young, but probably close to the given ages in Shakespeare's play.
Benvolio is played by young Australian actor Kodi Smit-McPhee, from Romulus my Father, Let Me In, The Road.
Release date is given as 2012, so don't hold your breath, and the script is by Julian Fellowes (Gosford Park, Downton Abbey). Director is Carlo Carlei.
More at IMDB here: http://www.imdb.com/title/tt1645131/
PS. Luhrmann's film is 16 years old now? Yikes!
Photos from their respective IMDB profile pages