What is Sony’s next generation strategy?

Gamasutra on the logic behind Sony’s unexciting Tokyo Game Show announcements:

Taken individually, each item doesn’t sound particularly exciting (especially this far into a console cycle, when everyone is waiting for hints of the next-generation entries from Sony and Microsoft).

But read between the lines, and you’ll see that Sony is setting the tone for the next platform wars—wars which will be fought not just in home consoles, but in mobile computing platforms and entertainment apps on set-top boxes.