https://www.bleedingcool.com/2019/11...nd-todd-nauck/

Gwen and Peter may not have met until Amazing Spider-Man #31 in 1965, but that doesn’t mean Gwen’s life began on the page. Learn the never-before-told origin of Gwen Stacy in Gwen Stacy #1.
Interesting concept. In fact this is Gwen Stacy's very own ASM #258 or Untold Tales of Spider-Man #16 or Parallel Lives, an attempt to define Gwen before she met Peter.

Gage is a continuity buff so my guess is that he'll use this to explain why Gwen was so harsh in the Ditko years only to reveal a softness after that. He might also try and add in stuff about her being interested in science and other nosh and how that squared with her being a beauty queen socialite in her first appearances.

In an overall meta-sense, spoilers:
If Kindred-maybe-Gwen is true, this is a good way to reintroduce and remind people of Gwen
end of spoilers