No matter how you feel about Shakespeare (or, for that matter, GONZO), I defy you to watch the trailers for this show without drooling.
Romeo x Juliet, like Studio GONZO's Gankutsuou, appears to be a futuristic and/or fantastical adaptation of its source material (set in Neo Verona, a city floating in the sky, and including what rather resembles a Pegasus of some sort). They've obviously taken some liberties with the story--for instance, Juliet now cross-dresses as a knight to fight against the ruling Montague family. (I'm not marking that as a spoiler, since it's in the trailer and other promotional material.)
It seems as if they've got some great people on board for this project, and the trailer really is to die for. Also, Tybalt looks totally hot. It has already started to air in Japan.

