From PSU: “Resident Evil 3 remake producer Peter Fabiano has revealed the upcoming survival horror revamp will not feature alternate endings.
Those of you who played the original game may recall that players were able to make various choices throughout the game, which resulted in new sequences depending on what decision you made. This also affected the ending, resulting in one of two outcomes for Jill Valentine when she escaped the city, a well as the fate of a certain villain (fans will know what Im on about).”
Source: N4G PC Resident Evil 3 Remake Won't Have Alternate Endings