Google has multiple warehouses, and apparently the one mine was sent from still had November units in stock at the end of March, when I made the purchase.How have people had January manufactured devices if they still don't have old stock?
Variation such as partial yellow tint and bad sensors isn't acceptable. I think we can both agree on that. But I won't travel down the road of useless speculation here, because it doesn't matter who is responsible. What matters is that the issue is resolved.