The actual scents were inspired by three flowers - rose, iris and tuberose. The bottles will be crystal amphoras like those used for the first Dior scents, in the bandeau tricolore: the three colours of the French flag ~red, white and blue. They come in a 75ml/2.5oz spray.
The perfumer behind them, Francois Demachy, describes the scents as "jewelled flowers".
Rose (France) - fiery rose with orange, pepper, amber and musk.According to other sources (ie.Octavian Coifan) three supermodels inspired the type of woman represented by each of them: Stella Tennant for Rose, Kate Moss for Iris and Gisele Budchen for Tuberose.
Iris (Lucky) - violet with iris, plus musk notes from ambrette seeds.
Tuberose (Victoire) - tuberose with jasmine, soft patchouli and vanilla.
La Collection Particulière will debut in 30 Dior boutiques around the world starting Nov.19th
EDIT to add official Dior descriptions:
Passage No 4 (Rose): "A sovereign rose, a fiery pimento, a journey, a garden."
Passage No 8 (Iris): "A velvet violet, a sophisticated iris, a dream, a burst of laughter."
Passage No 9 (Tuberose): "A dazzling tuberose, creamy woods, late nights, fireworks."
Also Octavian Coifan has been the very first to smell those and has great things to say too. Please go to this link to read his reviews:
Reviews of scents in La Collection Particulière by Dior, by Octavian Coifan (1000fragrances).
Perfume Shrine will focus in depth on the Dior chypres shortly. Stay tuned!!