What a shame, it looks like it has probably died of drought stress to me. But if it had green leaves earlier, and IF the wood still has green under the bark it may still be alive. Scrape a tiny bit of the bark off with your thumbnail on a smaller branch, and if you see green under there, that is good. If not, take it out.
Did you plant new sod around that tree? The grass looks wonderful for a yard that had been neglected. But putting down the sod over the root area of the tree was not a good idea. The new sod is probably stealing all the moisture - soaking it up before it gets down to the tree's root system. I would strip back the sod around the tree in about a 5ft. circle, soak the ground thoroughly with the hose all around the tree and out beyond the drip line, then put down some wood chip mulch on top of the soil around the tree to help keep the roots cool and the moisture in the soil.
Once it starts to grow some more leaves you can give it a LITTLE bit of fertilizer but wait until the leaves are full sized to do this.
