Revlon has launched Revlon Parfumerie, a new line (although not their first) of scented nail polishes. There are 24 scented colors ranging from Wild Violets to Sunlit Grass to Italian Leather to Pink Pineapple to Surf Spray to African Tea Rose. The scent is apparently not evident until the polish is dry on nails; "light fragrances last all day".
Dior has done a few limited edition scented nail polishes, and last year Calvin Klein made one scented with CK One Summer. If you know of others, do comment.
Revlon Parfumerie Nail Polishes are $5.99 each at Ulta.