The item drop rates in NieR Replicant will remain mostly the same. Director Ito Saki revealed this information in an upcoming interview. It was mentioned that the drop rates for the eagle egg and titanium alloy will remain mostly the same. Players can use the same methods from the original release of NieR Replicant to obtain these materials. [Thanks, Ryokutya2089!]
Additionally, fishing will receive some changes to make it easier to understand. Shortly ahead of release, Square Enix has shared several trailers. One of which is a live action trailer that is set in Shinjuku, while the other features Kaine’s famous quote. However, both of these trailers are fairly spoiler heavy. Square Enix also shared another trailer, specifically on April 1, 2020 that put a spin on some gameplay elements of NieR Replicant. This trailer changed the perspective of some of the activities you can participate in, such as fishing, portraying these actions in a more provincial way.
While the item drop rates in NieR Replicant remain mostly the same, a recent gameplay broadcast illustrated the changes made to the combat. The recent broadcast on YouTube and the Japanese broadcasting service NicoNico showed off some of the more extensive changes. An archive of the YouTube broadcast is currently available to watch.
NieR Replicant ver.1.22474487139 will release for PlayStation 4, Xbox One, and PC in the West on April 23, 2021.