Looking forward to this. Not sure if they are still using Berylium for the mid and tweet, but whatever it is, apparently it's used for the bass driver as well this time.
A price of ¥750,000 each is mentioned, or $6,170 USD
edit: just found this out:
"Rather than Beryllium or carbon fibre, diaphragms are zylon, a liquid crystal polymer with tensile strength exceeding aramids."