I too am suspicious of this report. Two of the sets (50006 and 50011) are already available for purchase on the Swiss and German stores on Lego.com.
I can believe that the line will be discontinued after 2013, but I find it hard to believe that all four sets scheduled for this year are canceled.
Personally, discontinuing the Games line would be a huge disappointment. They are the main reason I have interest in Legos, but I frequently buy other sets (Ninjago, Star Wars, City) for my kids, as gifts to kid relatives and for birthday parties that my kids attend. I also buy multiple Lego Games sets and donate them to Toys for Tots. Lego would 100% lose my interest and support if they canceled these sets and discontinued the Games line.