I'll bite.
Castle Stuart has added some bunkers on a couple of the wide open holes that have little or no bunkering. The team behind the course have stated that they planned to do this all along, once they saw how the course played. Cynics may say that this is because at last years Scottish Open the winner was something like 20 under after 3 rounds. Personally, having met Mark Parsinen an number of years ago, and Stuart McColm more recently, I am prepared to believe its because they genuinely are looking to evolve the course themselves.
Mark P told the story how after building Kingsbarns he changed a bunker early on after how he saw how it played, and after negative comments from Gary Player. When you think about it, why wouldn't you want to tinker away if you are an owner/designer. Perhaps second time round he figured the better way of doing that was to add things as you went along rather than taking away/altering.
Niall