Was just announced this summer at Otakon. Nitro+ makes some ridiculously high-quality games, so this partnership will be great for seeing more eroge in English.
Preview images from Demonbane (possibly NSFW):
They've made their own little website for it, too:
Al Azif , and all the character designs are so (*´Д`)ﾊｧﾊｧ Hope it comes out before Christmas.