Speaking with TheVerge, Tommy Williams, Konami’s head of communications for the Americas, has confirmed that “Metal Gear Solid Delta: Snake Eater, will reuse the voice lines from the original game with no changes”.
This will also be the case when it comes to the Japanese dub, which also makes sense considering some of the Japanese VA’s have passed away over the years.
Source: The Verge
The Verge, confirms MGS Delta will reuse the original game’s voice lines — with no changes