Maybe this is a warning to the family that he will add chapters of how he's being treated since the death of E...and a possible re-write of all the damning quotes....I know, I know...I just don't trust these two conniving backstabbers...
It certainly could be a warning as some of the MSM has reported that Markle isn't allowed at the funeral. If true she will claim it as racist.
My thoughts; IF indeed they go back to CA and Harry releases his book, ok, so what. He brings shame again to the family. It may even cause the Brits to reject the monarchy. Only thing is, his kids now have a title, so he's stabbing them in the back as well.
Harry may feel proud of himself and may feel he got everything off his chest, but he still has to look himself in the mirror and that mirror right now has already cracked.
He's never going to regain the respect or integrity that he once had. In the end, he loses. Oh, except for his trophy wife.