The language Duncan pointed too is standard language whenever any company asks shareholders to approve more shares. It dont mean anything.
The bottom line is, regardless of the language, they plan to use 4 billion new shares in one capacity or another down the road. I would think an increase of 1 billion would be more then ample to carry them to the next annual meeting, 12 months out, so why the 4 billion is a mystery. If they issue more then 1 billion in the next year we are all in trouble.