I spotted these in the supermarket last week and continue to be weirded out by them on an almost daily basis. If someone had sent me a link to these I would have dismissed them as a hoax.
They are about the same size as a gooseberry and a little squishy to the touch. When sliced in half it looks exactly like you want it to – a miniature kiwifruit. Following in the tradition of the cherry tomato, they are an improvement on the original in every way: smaller, sweeter and, most importantly hairless.
IMHO Kiwifruit have always been held back by the need to have a knife and a spoon to eat them (that is if you ignore the plastic spoon/knife things that get given away with kiwifruit from time to time). Apples, mandarins, bananas – all successful fruit because, in part, they do not demand that you have a tool in order to enjoy them. I can see real potential for the KiwiBerry unless, of course, the strong pro-cutlery lobby decide to enter the fight.