Ô d'Azur was developed by perfumers Domitille Bertier and Sophie Labbé, and is described as fresh with floral and fruity accents. The notes include bergamot, lemon, rose, peony, ambrette seed and musk.
Lancôme Ô d'Azur will be available in late June, and I'll update with sizes and concentration when I can find them. (via conseillere-de-beaute.fr)
Update: Lancôme Ô d'Azur will be available in 50, 75 and 125 ml Eau de Toilette. (via cosmoty.de)