In case somebody tries to order one I can save them some research time.
These things were supposed to be released today.
I had preordered on Amazon but they stayed at "in 1-4 months". I called them to ask whether they have any information whether they get some anytime soon or not. They didn't cooperate and didn't give any other information than what is in the product page.
B&H is still sitting there as "preorder" with release date of today.
Adorama had them with what looked like orderable to me, as in in stock. I placed an order, then called them to make sure they are in stock. They are not, they expect some next week. Meh.
There is a third-party seller on Amazon who claims that they have 12 lenses in stock. I placed an order on that one. No reaction yet, I hope there are no "communications issues" about what "in stock" means. (ETA: they now updated the order as "shipped")
Hope this helps.
My imagine composition sucks. I need a heavier lens.