Well, some further details must be given.
This afternoon, I went to the circuit to verify.
In the fact no changes on the track:
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http://ekladata.com/xVVzycmdsaPkoapW...as@500x281.jpg
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http://ekladata.com/fi65QRoWZEVGAe4J...Yo@500x281.jpg
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http://ekladata.com/fi65QRoWZEVGAe4JgPEAnnXhnYo.jpg
Pictures of the Bugatti circuit showing the new graveltrap in this curve.
This one
http://ekladata.com/NwwoDAD6Oy4Nw9az...-w@500x281.jpg I think they only widen the asphalt strip. And in the same curve I think it is current maintenance :
https://lh5.googleusercontent.com/-9...129_143744.jpg +
https://lh5.googleusercontent.com/-h...129_143749.jpg
Nothing important elsewhere except on the old karting circuit where the old pits disappear one after the other :
https://lh4.googleusercontent.com/-G...129_150719.jpg +
https://lh4.googleusercontent.com/-R...129_150723.jpg 