Wasn't there a vague mention to Red Matter in one of the DTI books?
Also, one of this year's TOS books, The Folded World mentions Kirk having an uncle Frank. Uncle Frank was supposed to be Kirk's stepfather in XI. Although The Folded World actually makes Frank the nameless uncle in Idaho who owned the horses in Generations. But then, I guess in the Prime Universe there was no reason for him to move to Iowa and help his sister raise his nephews.