Neither Snake voice actor David Hayter nor Metal Gear series producer Noriaki Okamura see the upcoming Snake Eater remake as a replacement of the original.
Metal Gear Solid Delta: Snake Eater is a remake in the most literal sense of the word. Konami seemingly not keen on incurring the wrath of the series' fanbase after the past 10 years following the Kojima and Konami controversy has seemingly made the remake almost 1:1 with the 2004 original, to a standard the series' producer called "almost too faithful." Aside from some upgrades to graphical fidelity and controls, everything in the game remains as it was in Metal Gear Solid 3 (even down to the 2004 voice recordings being reused).
