According to the site TwistedVoxel, Shenmue III will have a day one update. The author Ali Haider writes...

"The game also has a day one patch which reportedly weighs around 4.5 GB. This patch size applies to the PS4 version and will update the game to version 1.01. It is live on servers for the Japanese copy of the game. It is possible that more patches will be released for the game later down the line and possibly before the launch of the game as well."

Ali continues...
The official PlayStation Store doesn’t seem to list any file size for Shenmue 3 but the PC system requirements had set 100 GB hard disk space as the minimum space needed to install the game. Meanwhile, on the PlayStation Store, the only file size is for minimum save which can be a mistake since it demands 26 GB.

It is unknown where this information has come from at the moment. Hopefully more info will be released in the coming week.

@100WaysToChai

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PC Version System Requirements
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Minimum:
OS: Windows 7x64, Windows 8x64, Windows 10x64 (64-bit OS Required)
Processor: Intel Core i5-4460 (3.40 GHz) or better; Quad-core or better
Memory: 4 GB RAM
Graphics: NVIDIA GeForce GTX 650 Ti or better (DirectX 11 card & VRAM 2GB Required)
DirectX: Version 11
Network: Broadband internet connection
Storage: 100 GB available space
Sound card: DirectX 9.0c compatible sound card
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Recommended:
OS: Windows 10 (64-bit OS Required)
Processor: Intel Core i7-7700 (3.60 GHz)
Memory: 16GB RAM
Graphics: NVIDIA GeForce GTX 1070
DirectX: Version 11
Network: Broadband internet connection
Storage: 100 GB available space
Sound card: DirectX 9.0c compatible sound card
Additional Info: Requires Epic Games Store Client to activate.

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