You have a source on that?
Even Donald Trump, a man well in tune with anything having to do with tax returns, says it's just two years. Others say it's 2010 and an estimate on 2011.
From the link in the post to which you're responding.
AND
Rahm Emanuel: John McCain Looked At Romneys Tax Returns And Decided Palin Would Be A Better VP McCain looked at two decades of taxes in 2008, PLUS the two years 2010 and 2011 that were just released. Not that this was the true reason they chose Palin afterall it is EMANUEL'S opinion.
That should be plenty. The LEFT, to name a few, are being A$$eS