Hi there - Lutron's Caseta Wireless products support 3-way lighting configurations and are compatible as part of the Works with XFINITY Home program. See below for a link to a help article about connecting your Caseta Wireless system to XFINITY Home.
http://customer.xfinity.com/help-and-support/home-control/connecting-works-with-xfinity-home-device/
Hope this helps!