Karbonius has just confirmed production starts next week. The price they have provided - 1,280 Euro - is a once-off for people on the list and will subsequently be $1,395 Euro. You will need a unique coupon to get the introductory price, which will be entered when you order on their website. I will send Karbonius the list and they will provide the coupons, which I will then send to individuals.
I've tried to contact as many people as possible who previously expressed an interest and I'm pretty sure the list is up-to-date but please check:
https://www.zpost.com/forums/showpost.php?p=29291402&postcount=150
Delivery dates will depend on how many people place an order. As I understand it, you can make x plenums from one mould before it breaks or becomes unusable. So, depending on numbers they may need to make a second mould, which will take some time.