Available July 17th for LEGO VIP members is the:
London Bus (set # 10258) $119.99 U.S.
The only other details known as of now are that it features a removable roof and detailed interior.
I would guess the LEGO Creator video will be out later this week or early next and I will post those updates. The London Bus was featured in a small form as a freebie with purchase at the LEGO store in set # 40220. The bus was also featured in micro scale in the 10214 Tower Bridge set and 21029 Buckingham Palace Architecture set.
The London LEGO sets must be selling well and maybe we will have a LEGO Creator Expert London Eye or Buckingham Palace in our future. One can hope.