According to a that is not an official site of the Church of Jesus Christ of Latter Day Saints, church president Thomas S. Monson is God's prophet and mouthpiece.
"Follow The Prophet" states,
… there is one person, above all, who we should be following more than anyone else on the earth today, and that is God's spokesman, mouthpiece, and prophet whom He has designated to be His voice to all the people of the earth today. The resurrected Lord, Jesus Christ, spoke through a modern-day prophet when He said,
For his word [the prophet's] ye shall receive, as if from mine own mouth [Jesus Christ], in all patience and faith.
Monson is in the company of great Biblical prophets such as Adam, Enoch, Noah, Abraham, Isaac, Jacob, Joseph, Moses, Aaron, Samuel, Isaiah, Ezekiel, Daniel, Job, and Malachi, according to the site.
Photos of the prophet's office and decor are here.