More Linklater Sun?

Ethan Hawke is saying that there's a third part to the Before Sunrise/Before Sunset films on the way. Can they follow up what was already a risky sequel without blowing it? And what would they call it - Before Sundown?  Would like to see more of those two, have to say. On a side note, heard good things about Julie Delpy's Two Days In New York, the sequel to her v enjoyable Two Days In Paris