You might find Stanislav Lem's Golem XIV worth a read, in which a what we now call an AGI shares, amongst other things, its knowledge and speculations about long-term evolution of superintelligences, in a lecture to humans, before entering the next stage itself.
https://www.goodreads.com/book/show/10208493
It seems difficult to obtain an English edition these days but there is a reddit thread you might want to look into.