From what I've heard, Ai Yazawa is determined to write again, but has got other job offers (she's a stylist) and doesn't know when she'll have the time to write again. I really hope it will be soon because I hate this so called ending, there are so many unsolved questions! I do hope she doesn't think no one is interested anymore...
It's true that it would be nice to get some news, now we can only guess what's next based on the rumours we hear...