Kellogg's Wheats portfolio is getting a new addition with the launch of a chocolate option with chocolate chips, while the raisin and frosted variants get revamped packs.

Berry and raisin cereal bars join Kellogg's cholesterol-reducing brand Optivita, launched last month, with support set to include sampling via a 'bar in box' promotional mechanic.

Meanwhile, a fruits of the forest variant joins the Special K bar line-up.