According to their facebook page, it's only for certain packs. This is what they say:
'Kraft Canada issued a Class III recall of KD Smart Original and KD Smart Three Cheese due to an unexpected trace ingredient of Yellow #5 found in testing. Please note that only two Best Before Dates are affected by the recall. ...They are: 12 AL 11 and 12 AL 12. (AL= April) Other Best When Used by Dates of KD Smart and KD Smart Three Cheese are not affected. Class III recalls can include food products that pose no health and safety risk, but do not follow federal food regulations.'