https://www.gamesradar.com/will-batm...ustice-league/Remember, it was only one year ago at this time Wonder Woman died/ascended to a higher plane of being in Dark Nights: Death Metal #7 while saving the Multiverse from the Darkest Knight, only to eventually return to Earth months later as plain 'ole Wonder Woman.
But as to whether those characters will really 'die,' as in anything resembling the real-life die, the answer, of course, is of course not.
So whether it's six months, a year, or even two, and no matter how many monuments to them are built, Clark Kent, Diana of Themyscira, Bruce Wayne, and the rest will return someday. It's only a matter of when not if.