The new locations are the Sodor Steamworks, Search and Rescue Centre and Shake Shake bridge.
The new characters are James, Gordon, Henry, Emily, Edward, Toby, The Fat Controller, Splatter, Dodge, Hiro, Victor, Kevin, Annie and Clarabel (does not speak), 'Arry and Bert (mentioned)
Here are some BIG spoilers! They of you who don't want to see it, LOOK AWAY NOW!!!
Here are the big news; Lady (flasback only) and Burnett Stone (flashback only)
So there will be a flashback from 'Thomas and the Magic Railroad'!
Look out for more news.