Since there is no contest portion this year, I don't think there will be a no purchase necessary option. In the past there was a chance to win $500 and whether you won was printed inside the cereal box as well as the form for the $5 gas card. When a contest is run, there is a rule saying you must be able to enter the contest without paying anything (there is a story about it here: http://queensjournal.ca/story/2013-0...essary-chance/). If you chose the no purchase necessary option for this contest, an entire empty box was mailed to you. That box also happened to have the form for the gas card, which is how people were able to get the $5 gift card without buying the cereal.
For this year, I don't see anything mentioning a no purchase necessary option since there is no contest.
I don't think I'll be buying the cereal this year, but the Rice Krispies squares are not a bad deal :) Like lotsasavings said above, it's $6 for 4 boxes at Sobeys right now and then you get the $5 gift card back. It's a snack I buy anyways so it's a good deal for me :)