No hay mejoras, solo es un parche por una situación critica desde Enero:
"Going by Samsung’s own documentation, the April 2021 security patch includes 21 fixes from Samsung and 30 fixes from Google. Recently, several critical vulnerabilities were found in smartphones using Qualcomm chips. The Galaxy J8, which uses a Snapdragon 450 processor, has received fixes for those vulnerabilities via the April 2021 security patch"
Puedes ver mas en Sammobile, ha sido la noticia desde la semana pasada para los serie J