This all looks amazing but there are a few things I'm still confused about:
1) What is the purpose/what is that bridge thing over Diagon Alley? Is it meant to be a London roadway?
2) How is Knockturn Alley going to stay dark, like in the online virtual tour?
3) How is the brick wall effect being carried out? Also, in the virtual tour, the entrance looks very narrow
4) This might sound silly, but I'm having a hard time comprehending it. As of what I've gathered there are two trains and two tracks. If the train is making a journey (say from London to Hogsmeade) and it stops at Hogsmeade, wouldn't it eventually have to go in reverse to get back to London?
5) Is there going to be a platform 9 3/4 effect, going through 9 and 10?
Sorry if this is a lot, I haven't been able to lurk the forums lately. But this is all too exciting and I hope any of you can answer these questions!