The Finnish "A Pony Called Spike" Book is Out · 8:10pm Oct 24th, 2021
Looks like the book featuring Spike turning into a pony is out now, and some images were dropped from it. May not say much but it's good to see something. Let's hope a full gallery will be released along with a full translation.
https://www.equestriadaily.com/2021/10/the-finnish-pony-called-spike-book-is.html
This should have at least been an episode. It would have done wonders bout Spike, specially bout his age
It's cool that a concept only found in fics is now a published book making it canon-ish