According to Screen Daily : "Vera Brittain’s First World War memoir, Testament of Youth, is now in post production." (9 May, 2014)

Article on the Digital Spy website

WW1 memoir Testament of Youth starring Alicia Vikander, Kit Harington & a fabulous ensemble cast begins shoot http://t.co/1KecMftIxp
- BBC Films (@BBCFilms) March 17, 2014