I will not waste anyone's time by reviewing the game of Carcassonne as there are plenty of competent reviews available. Instead I will concentrate on reviewing this particular version.
The box it comes in is very nicely made and feels set to last a lot longer than most. Perhaps due to the meeple shape it is quite thick cardboard and very sturdy. The meeples themselves are a nice touch being transparent and quite heavy. Perhaps a slight gripe in that the grey/black meeples can be a little difficult to see on the board, surprisingly the green stand out well.
The mini expansion "festival" is useful as you immediately have more than one way to play the game. The expansion rules are extremely simple and don't really change the base game a great deal but do give a little variety.
In summary; if you already have Carcassonne I don't think this will really add much to your enjoyment unless you are a collector. If you are a first time buyer, quite honestly this is the ideal set to start with. It is well made, feels good quality, and has a mini expansion that doesn't stretch the game too much.