I wondered if we'd every find out what was said. As is the tradition, ex-President Bush left a few last words for his successor, Barack Obama, in a letter that was left in the oval office desk drawer.
The Progressive got the exclusive on the letter left by GWB for President Obama.
As they said, in Text of George W. Bush's Letter to Barack Obama:
Just Released: Text of George W. Bush's Letter to Barack Obama, which Bush placed in the top drawer of the Oval Office desk, as is customary.