At SHOT 2014, SureFire had a new freefloat handguard on display. It is a minimalist handguard with a picatinny rail on top. At first glance it does not seem like anything special. But upon closer inspection it has picatinny mounting points built into the rail sides. It is a clever design that does not require any picatinny rails. However you can add them if you so desire. I see this as a possible contender to the Keymod style handguards.
Take a look at the pic below, you can see how the Scoutlight interfaces with the hand guard.
Take a look here