The 2011 edition includes a new duel variant for two players. Additional material are 6 cardboard tokens and a duel score track (printed on the back of one of the scroeboards).
There is an inset on the box front saying "NEU! Jetzt mit spannender Duell-Variante". Also there are more awards printed on the box (MinD, spiel gut, Spiel der Spiele).
plastic tiles with dimple (depth 0,1 mm in opposition to the first edition [and probably other ones] with a depth of 1 mm) like a circle; inside the dimple is the colored symbol
markers are plastic pegs, score tracks have holes.
height of plastic racks 13 mm
spaces on the border are white with a thick blueish grey surrounding