A well known shipping carrier Hanjin just went bust, causing tremendous delays to all who used their services.
Their ships and cargo are apparently stuck now.
If HT used them to ship their figures, that could be the reason they adjusted the delivery dates to account for the stuck cargo either at port or seas or securing the services of another carrier.
https://www.reuters.com/article/us-hanjin-shipping-debt-freight-idUSKCN11F00D
It would explain almost everything getting delay emails today