I noticed this too with a handful of releases from Frontiers that I had palced on preorder from Amazon here in the US. I received notification late last week / over the weekend of new release/shipping dates for the following:

Second To None by Restless Spirits
Release date: Friday, August 12, 2022
-- Delivery estimate: Monday, August 22, 2022

Brothers In Arms by Sunstorm
Release date: Friday, August 12, 2022
---Delivery estimate: Monday, August 22, 2022

Animalistic by Nordic Union
Release date: Friday, August 12, 2022
---Delivery estimate: Monday, August 22, 2022

Generation Radio
Release date: Friday, August 12, 2022
---Delivery estimate: Monday, August 22, 2022


So I don't know what the issue is, whether its a manufacturing issue, supply distribution issue or what...