Definitely ripples. Perhaps Reed or Hank would end up getting involved with the new Iron Man. Sure, Rhodey would probably take over the role, but like you said, Tony was the brains behind the technology so another brain has to step up in his place.

I don't know, but the article seems to imply it's going to be a mini series, since issue 1 comes out next month. Though how many parts it'll have, I don't know. It'd be neat if they did the whole stages of grief element again, but I'm not sure it would work for Tony's death so much since he is nowhere near as well-liked or loved as Steve was.