Verified answer
Does preordering guarantee a preload?
Quick answer
No universal preload window is confirmed. A preorder secures the listed license and active bonuses, but the official announcements reviewed here do not promise the same advance download schedule on every store.
What this means
Use the signed-in storefront’s download button or countdown rather than an unofficial timer. PS5 Deluxe advance access is an edition benefit and should not be confused with a confirmed preload for all buyers.
Official source
Remedy — current release announcement
Continue with the relevant guide
Open the related Control Resonant guide for the current topic summary, connected systems, and any later verified changes.
This answer is reviewed against pre-release official information. It states unknown boundaries explicitly and will be revised when Remedy or a first-party store publishes a newer fact.