US tablet sales should more than double in 2011, says Forrester analyst Sarah Epps. Even though the firm's estimate for 2010 is being increased to 10.3 million units, Epps suggests that 2011 will be still more impressive with sales of 26 million. The trend is in fact predicted to accelerate well beyond the rate of PC sales, resulting in 82.1 million tablets in 2015. By contrast, only 44 million PCs are expected that year.
