Amazon hasn't confirmed how many Kindles it's sold publicly but today's Times newspaper suggested the figure was 6 million. The next logical stage was to make a smarter tablet, which the company has certainly done with the Fire in America.
This hasn;t yet been released in the UK but reception has on the whole been positive. It's therefore not at all unlikely that the series of systems would be extended.
This is where the analysts have been very clever, if they're right (and very stupid if they're not). They periodically ask the known suppliers of components of computers what they've sold lately and to whom. This is mostly a sanity check - company A claims it's sold a gazillion PCs to talk its share price up, if it's known only to have bought five memory chips then the analysts know it's lying.
Nothing's going to happen for about a year, but if this is right then there could be a new and very serious competitor in the mobile phone space over the next 12 months,