Nonnie, yes, I believe so. The twitter conversation was initiated by Shatner, who asked Adam why don’t they just give Henry the book to jog his memory. Adam answered keep watching, be haven’t forgotten the book.
Afterwards, Shatner, Adam and Colin arranged for some signed OUAT stuff to be donated to Shatner’s charity event.
Later still, it was discovered that the pictures of Henry, Regina, Archie and the book are actually for Quiet Minds.