I don't think it is on air yet. But I know it is sometimes around this year that it will air.
I didn't like Spring Waltz but I didn't hate it either. It was moving too slow for me but I manage to finish it because of HHJ. She is very talented, I especially love her in Shining Inheritance aka Brilliant Legacy... LMAO I don't know why Korean English titles are so funny. Not literally funny but you get the point right?