There's been a new development about the upcoming reboot. Apparently, it will be called Sailor Moon Crystal.
Also, apparently, this is a promo image that someone uncovered (I don't think it was officially released, but instead was found in a directory on the official site):
promo.jpg
Link: http://sailormoon-official.com/img/animation/anime.png
More info: Sailor Moon Crystal Leak Translation - Miss Dream
Edit: So much hair...