Some set photos from Dubrovnik showing costumes and what looks to be a speeder:
http://www.starwarsnewsnet.com/2016/03/first-look-at-troopers-from-the-starwars-episodeviii-set-in-dubrovnik.htmlThe aurebesh on the guards’ helmets says “CBPD”. I’m seeing some people suggesting that it could be Han’s funeral procession, but that sounds like nothing more than wild speculation to me. In any case, someone on reddit pointed out that the guards seem to be pretty clearly based on this McQuarrie design:
It’s not too wild a speculation that we’ll see Han’s funeral, based on this picture of Carrie Fisher in what could be a mourning dress.
They’ve also borrowed from several other McQuarrie concept drawings for whatever it is that Dubrovnik turns out to be in the film;
There’s also been rumours about Mark Hamill being in Dubrovnik, so it could be that he decides to attend Han’s funeral, and undoubtedly something dramatic will happen when both he and Leia, and presumably also Rey and/or Poe is there.