Sony announced that its press conference at CES will be held on January 4 and will also broadcast the event online. The only image leaked so far shows a 5-inch handset with USB-C that is believed to come as a follower of the Xperia XA.
http://www.notebookcheck.net/Sony-to-unveil-a-new-Xperia-handset-next-month.188289.0.html