N°19 Poudré is the latest fragrance release from Chanel and is the first flanker to the original N°19 fragrance which was released in 1971.
As the name suggests N°19 Poudré is intended as a softer, more powdery version of the original and is an attempt by the brand to rejuvenate and modernise the image of the N°19 line.
Chanel describes N°19 Poudré as:
“A Floral-Powdery-Green fragrance that reveals a new powdery-musky facet.
The voluptuous scent of a bouquet of Iris blends with the freshness of a breeze of Vetiver roots: an enveloping, powdery fullness softened by White Musk notes.
N°19 POUDRÉ: within the smoothest, silkiest whisper lies the boldness of a legendary accord.” 
Esprit d’Oscar is the new fragrance from esteemed fashion house Oscar de la Renta. It is the first new fragrance from the house since Red Satin in 2007.
Esprit d’Oscar was created by perfumer Frank Völki and is meant to be a re-imagining of the original Oscar de la Renta perfume ‘Oscar’ which was created in 1977. According to the brand, the structure of the original has been ‘refreshed’ and made more ‘contemporary’.
I have not tried the original Oscar, so I’m not able to compare the two or comment on whether Esprit d’Oscar is a worthy reinterpretation, however the general consensus in the perfume blogosphere is that it is.