The singer has not yet revealed a name or an official release date for the LP, but Pitchfork writes that the album came "in the form of a burst of inspiration" when he finished up last year's sheet music Song Reader release.
Beck will be playing a limited number of solo acoustic dates in North America this summer, where he will be debuting the new material, as well as some full band shows and a solo appearance on the Americanarama Festival bill in Wantagh, New York on July 27 alongside Bob Dylan and Wilco.
Speaking to NME late last year, Beck hinted that he would release two new albums in 2013.
"There is music and it's coming!" he said.
"I have this one record I started in 2008. It got put to the side for a long time but recently I've been mixing some of the songs. I'm not sure if they'll be singles or EPs or an album but it'll come out in some way and it sounds... sonically adventurous. I also have a record that I recorded last year in Nashville, which I may or may not finish."
Beck's last full studio album 'Modern Guilt' was released in 2008.