re: BlackBerry CEO: Tablets Have No Future
I suspect what he was actually getting at, is that phones are becoming so powerful that he sees a future where you basically hook your phone up to a keyboard/monitor on your desk and it becomes a workstation, ie, the phone becomes a highly portable workstation. Tablets are sort of the in-between, less convenient than a smartphone, but much more portable than full blown computers. I can see why he would conclude that, given the processing power of some of the latest smartphones, it makes sense that you'd someday just plug one up to a screen/kbd for serious work, and then take it with you and have your whole environment on hand wherever you go instead of managing multiple environments and syncing and such.
I'm not sure tablets are going away per se anymore than the desktop computer is going away, but they may soon get squeezed by so called phablets, and by smartphones with HDMI jacks and Bluetooth docks.