As you can see in this article, 2 Material design themes developed by an XDA user has been approved, according to him we should see them maybe tomorrow. Let's see how they look like, but if they are what I've seen over XDA already they look great, just basically emulating pure Vanilla Android.
Samsung Approves The First Two Material Design Themes | Androidheadlines.com
Samsung Approves The First Two Material Design Themes | Androidheadlines.com