Yah. Sounds like Scott Lang will be our Ant Man. He's said that Pym isn't needed to create Ultron. I assume that means that Tony Stark will create it (as an evolution of JARVIS perhaps?).
Reddit r/comics was not happy with this news. Really, I don't care. I think the movie is going to be really good, and in the scope of the Cinematic Universe, it makes sense. If you want a world with Pym and such, go read the comics. There are really good Ultron stories, and really good Pym stories, and I'm not going to lose my mind when they don't match exactly. That's something I got over a long time ago (probably with X-Men 3, when none of the characters matched my minds eye). If it's a fun movie, with a good story, that keeps the general overtones of Ultron's creation, I'm not going to lose any sleep