The sisters grimm

I know this is a stupid place to put it but... has anyone here heard of the fantasy series (see title) if so when is the next one coming out?
never heard of it...
You decide to reply NOW!!! I"VE HAD THIS UP FOR A FRIKKIN YEAR!!!!!!!

Anyway, I found a website to help me with stuff like this now so.... never mind.
no, just decide to say never heard of it, what is it?
Oh.... a book series..... pretty cool.....