I didn't hear any hints one way or another as to whether we're actually getting an Earth Day set.
FWIW, we didn't get an Earth Day set in 2003, and Darryl didn't catch the list in 2004.
Here are the set lists from '02 & '05:
2002
Grateful Dead - Throwing Stones
Cat Stevens - Where Do the Children Play?
Talking Heads - (Nothing But) Flowers
Joni Mitchell - Big Yellow Taxi
Beatles - Here Comes the Sun
Marvin Gaye - Mercy Mercy Me (the Ecology)
John Farnham - You're the Voice
Three Dog Night - Out in the Country
David Crosby/Graham Nash - To the Last Whale
Spirit - Nature's Way
2005
Marvin Gaye - Mercy Mercy Me (the Ecology)
Cat Stevens - Where Do the Children Play
Rumors of the Big Wave - The Only Green World
Joni Mitchell - Big Yellow Taxi
Dramarama - Earth Day
Crosby & Nash - To The Last Whale
Midnight Oil - Beds Ae Burning
Eagles - The Last Resort
Jackson Browne - Before the Deluge
Spirit - Nature's Way