COVID-19 is still a major factor here in the US. Its effects are still very strongly being felt everywhere, including in shipping. It's due to the ongoing pandemic that Wizards of the Coast has announced that some of the extras around Icewind Dale: Rime of the Frostmaiden are going to be delayed by 2 weeks.
From the announcement:
Due to shipping complications related to COVID-19, the North America release date of the D&D accessory product Icewind Dale: Rime of the Frostmaiden Dice & Miscellany has been delayed. The new release date is currently on track for September 29, 2020 (previously September 15).
We do not expect the release outside of North America to be affected. Additionally, the upcoming D&D adventure Icewind Dale: Rime of the Frostmaiden is unaffected and is still planned for a September 15 release.
Thank you for your patience and understanding in these very challenging times.