I like it! Ninfia is really cute. Though it doesn't really feel like a Eeveelution to me, I don't know. Maybe I just have to let it grow on me, but it's just way too cute.
I think it's most likely a Normal or Flying-type. Though maybe the ??? could be indicating a new type, possibly Light. I'd love it if we get a Light-type cause I've been wanting that for years.
Maybe. Though I also think that maybe this is it's female evolution and they yet have to reveal it's male evolution. It would go along with the whole posiible X and Y theme of being based around genetics or chromosomes.