The reason that Bitmain released these batches including the L3’s and S9’s in my opinion. They accumelated much more crypto then in the last couple of weeks. In my view it looks like they took advantage of the low prices of the cryptomarket especially BitcoinCash.
We will see what will happen the coming months. A lot of miners are going to be shipped out. Especially in march. Going to the moon?
RE: Bitmain just announced a new Miner for mining Blake(2a) Coins - Antminer A3