This can explain a lot
Samsung Strikes Deal to Supply ASIC Chips to Bitmain
https://bitsonline.com/samsung-deal-asic-chips-bitmain/
Rushing out old stuff before selling new Antminer with Samsung chips inside
Samsung Strikes Deal to Supply ASIC Chips to Bitmain
https://bitsonline.com/samsung-deal-asic-chips-bitmain/
Rushing out old stuff before selling new Antminer with Samsung chips inside
No actual Samsung quote has specified who they are selling the ASIC chips TO - but eBang DID announce that they were working on a miner model using 10nm chips to be made by Samsung.
It would not shock me if Bitmain ALSO is going to source chips from Samsung, but it would be a major change for them.