My list is pretty long right now... and I've included Bon Iver even though it was originally released in 2007.
*Bon Iver, For Emma, Forever Ago
Chris Mills, Living in the Aftermath
Dead Confederate, Dead Confederate EP
Earlimart, Hymn and Her
Frightened Rabbit, The Midnight Organ Fight
Grand Archives, The Grand Archives
The Hold Steady, Stay Positive
The Jet Age, What Did You Do During the War, Daddy?
Julie Ocean, Long Gone and Nearly There
Lightspeed Champion, Falling Off the Lavender Bridge
Mystery Jets, Twenty One
Shearwater, Rook
The Whigs, Mission Control