mikhailv wrote:If it's got much more customisation,
I'm not sure about that one.
mikhailv wrote:less of the same tracks,
Seven new circuits will feature in the game, confirmed so far are Silverstone, Goodwood (Hill Climb), Willow Springs, and Matterhorn (fictional), and rumours indicate Bathurst will most likely be added as well.
mikhailv wrote:better AI,

The AI were fantastic in GT5, I honestly can't figure out what you're complaining about.
mikhailv wrote:better racing structure,
Not exactly sure what you mean, but I have a feeling we won't find out until the full game is released.
mikhailv wrote:full interiors for all cars,
Unfortunately no.
mikhailv wrote:real engine sounds,
Like in GT5, yes.
mikhailv wrote:and an actual challenge I'd buy it in a heartbeat.
Like in GT5, yes.
There we go.