This cartoon by Nate Beeler from The Columbus Dispatch reflects the disappointment felt by many people that Apple's new iPhone 5 was not more innovative. However, to fully understand the cartoon, you need to be aware of an English idiom. If something is described as "the greatest (or best) thing since sliced bread", people think it is extremely good, often better than it really is. • Smartphones are marketed as the best thing since sliced bread, but to me they're just another expensive gadget. Wikipedia explains the origin of the expression thus:
Sliced bread is a loaf of bread which has been pre-sliced with a machine and packaged for convenience. It was first sold in 1928, advertised as "the greatest forward step in the baking industry since bread was wrapped". This led to the popular phrase, "the greatest thing since sliced bread".
You can see more iPhone 5 cartoons at The Cagle Post.
To innovate means to introduce changes and new ideas in the way something is done or made. An innovation is a new thing or method of doing something. Something that is innovative is new and original. And an innovator is someone who introduces changes and new ideas.
• The disappointing iPhone 5: Is Apple falling behind the competition? (The Week)
• Apple iPhone 5: big innovation takes a holiday (CBS News)
• Review: iPhone 5 not terribly innovative, but still a smart package (CBS News)