There is a trailer and everything:
Click to view
I bet fandom is having the world's biggest conniption due to Cassandra Clare's fraught relationship with it, but I am an unabashed CC fan and adore her Mortal Instruments series (which should have stayed a trilogy but oh well) to bits. It's pretty much a kdrama on steroids and Jace is the angsty-sexy-deadly-beautiful combo that I eat up with the spoon (yes, I realize he is pretty much fanon!Draco under another name. If you think that does anything but makes me like it more, you are mistaken).
For those who are unaware of what it is about, CoB is the first in the Mortal Instrument series and its protagonist is Clary Fray, a seemingly normal girl who discovers she is one of 'shadowhunters' - sort-of-people who hunt demons. But there is an unfortunate issue of parentage, giant supernatural civil war and her love for a verrrry unsuitable shadowhunter to make her time less than fun. I am in it for Clary/Jace which is the most fucked up, slurpaliciously angsty thing ever.
The movie is coming out in August and I simply must avoid being run over by bus until then. Though how a mainstream movie oriented at teenagers is going to deal with the whole "I love you but we are siblings, so we can't. Well, we'll stop after this guilt-ridden, self-loathing makeout/I want you anyway, I don't care" thing, I have no idea. I mean, there is NO WAY. I suppose they can reveal the truth at the outset but that is one of the huge reveals at the end of the trilogy and also it would make the angst seem pointless...Plus, Jace being the Big Bad's supposed son is a huge huge plot point. And Clary being Big Bad's daughter is an even bigger one.
Anyway, we'll see...