We have seen mini before. Most recently every candy bar and snack has been reduced to snack size for bite sized cravings.
Pepsi most recently has introduced a small can that gives consumers just enough taste of a sweet treat without having the unhealthy side effects of a while can. A tasting menu perhaps. :)
From a business perspective, I think its super impressive that by going bite size, the soda giant might appeal to those who want just a bit, or something to hold them over till their next soda. I am not sure of how the new cans are priced, but it would be interesting to compare the delta between the costs of the new mini cans, normal cans, and the final cost to a consumer. They are far cheaper to ship and bottle I would assume, and the cost maybe be similar to a full can.
Mini cans have been around in airplanes and hotel mini bars for a while. It will be interesting to see how they perform in a mass audience.
Sometimes, its not whats on the inside.
Bonus: Other Mini Concepts