JGI is going to sequence the genome of barley (Hordeum vulgare), a reasonably close relative of wheat, an important crop in its own right, and a monster genome (though not as much of a monster as wheat itself).
Barley will be the fourth grass genome sequenced by JGI and the sixth grass genome sequenced in total (baring any secretive grass genome projects I don’t know about, a very real possibility). On the other hand, the barley genome is more than three times bigger than the combined size of all three grasses sequenced by JGI previously. Heck, at five gigabases it’s more than twice the size of the maize genome (one of two grass species, along with rice, sequenced by someone other than JGI)!
Read more at James and the Giant Corn blog