Even if it lasts 10 years, it won't sell 100 millions. Sony's 10 year forecast was at the time when they thought they will walk right on top of the sales chart. I can guess that that we can expect PS4 release around 2011-2012
If it magically sells 20+ millions this year (so near 30 millions total by the end of 2008) it might have a weak chance(if interest for wii magically falls). But i highly doubt it.
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