Joe has a really brilliant take on this and Matt and he are going to take things from here so I'm really happy. Absolutely no casting has been done formally although you can google the MTV interview from last January where he and Sir Liam Neeson are chatting about it.
Miller also updates The Serect Service:
Matthew Vaughn and I conceived The Secret Service a year or two back and plan to make into a movie once he's wrapped the First Class sequel next year. Our inner-geeks are buzzing about the idea of seeing Mark Hamill play himself on the Lucas stage if that's where we end up filming, but this lunch was nothing official and just a thank you for Mark letting us kill him off. It'll be eighteen months at least before we get into a Secret Service movie since X-Men 2 is such a huge commitment for Matthew.