Rockstar says the Ultimate Edition Upgrade will be available for Standard Edition owners to buy separately at any time from the PlayStation or Microsoft store. Physical owners can upgrade after redeeming their download code.
Verified
The GTA 6 Ultimate Edition Upgrade can be bought any time
Standard owners can upgrade later, including boxed copies once redeemed.
Source: Rockstar Support — Platforms, Editions, and Versions
Last verified 12 Oct 2026.