i went to afghanistan and came back with 4 new ones. if you get some valor awards, which are a lot more common in iraq, you could get more, ditto with regard to pres. unit citations.
since the early 90s i dont think theyve come up with a lot of new ribbons/medals. there might be one for bosnia but i dont think so. the global war on terrorism medal/service ribbon are the only two new ones that i know of. but hell, as u might recall its not really something thats worth your time thinking about.
Thank You for your service to our country.