According to the post on Apple knowledge base page, users are facing problems in the trackpad and keyboard of new 13-inch Retina MacBook and company is working on it to fix it asap.
“Apple is aware of rare circumstances where the built-in keyboard and Multi-Touch trackpad may become unresponsive on 13-inch MacBook Pro with Retina display (Late 2013) computers and is working on an update to resolve this behavior.”
Meanwhile, Apple suggested a temporary solution for the users experiencing problem: “User should reset the keyboard and the trackpad by closing the computer’s display for a minute before reopening it.” Company didn’t mentioned about its new update coming date on its timeline.