Again, no he's not. He may or may not be on the cover (I haven't seen it so I'll take your word for that), but the story itself isn't about Han. Both the old generation and new generation get equal ink time.
edit: or rather, it's not SOLELY about Han. I'm sure he has a major part, but so do the new generation such as Jaina and Jacen Solo, Jag Fel, etc.