If this device is for real and it comes out in 2010 or later 2009, this might be the perfect BlackBerry for me.
A BlackBerry Bold+Storm meshed into one unit with a square touchscreen.
Especially if it uses the clickable touchscreen technology like Storm, for the non-annoy touchscreen experience (accidental taps and mis-positioned taps become harmless with Storm's touchscreen -- eliminates a major beef I have with older touchscreen technology)
Easier panning of images, maps, webpages.
Easier clicking on links.
Easier copy+paste.
Easier zooming (if apps eventually adopt pinch-zoom)
May double as a sketchpad. (with drawing app)
For my deafness, sketchpad ithis could be very useful for writing notes as well. And I get to keep my physical thumb keyboard.