There are a number of chocolate and other flavored power bars on sale at the moment. making me think a niche has been identified in the market that manufacturers are now competing for. Morinaga has released a ChocoFlake Bar and a Milk Chocolate bar with macadamia nuts (for a limited time only). The ChocoFlake Bar tasted the better of the two.
I expect other chocolate bars to start rotating through the convenience store shelves as the market research analysts work out who has the best product.