Cisco too in the Tablet market!

Cisco is allset to launch its Tablet - "Cius". Amazon's Kindle, Apple's I-Pad, HP is also getting into this segment. It was a wonderful experience using the i-pad. But honestly, I wonder if there is a good enough market for these Tablet devices. Laptops are becoming thinner and sleeker and Smartphones are getting bigger screens. So what's the need for a Tablet( Ofcourse these carry a huge "show-off" value)?