So this confirms Xbox Series X will use regular 50 GB Blu-rays same as Xbox One for physical games.
While PS5 will use 100 GB BDXLs as PS5 only discs.
This is also fascinating:
"Both digital console versions of
Call of Duty: Black Ops Cold War offer upgrades, within the same console family, from PlayStation 4 to PlayStation 5.
- PlayStation 4 will have an option to upgrade to PlayStation 5 through the PlayStation Store.
- Xbox One upgrade to Xbox Series X through the Microsoft Store is currently being evaluated and new information will be updated in this FAQ when available. Please see information below regarding the Xbox Series X version as part of the digital Cross-Gen Bundle.
Both current generation versions (PlayStation 4 and Xbox One) will be playable on their respective next-generation console via backwards compatibility by downloading the game from your account’s digital library. But, the game will not include any of the next-generation features, such as higher framerate, hardware based ray-tracing, faster load times, and more."
Less than smartest of deliveries.