Currently it looks like the games will be… Metal Gear Solid: Master Collection Vol. 1 will soon appear in 4K resolution on the corresponding platforms. At least series producer Noriaki Okamura said that this is currently being investigated. Of course, there is not yet a time window for an update in this regard.
Die Metal Gear Solid: Master Collection Vol. 1 was released on October 24, 2023 for PS4, PS5, Xbox Series X and PC.