"Due to the unavailability of components that are integral to the manufacturing of both URC dimmers and switches, we are forced to discontinue our one-way URC Lighting by Lutron line. Don’t dismay! We are working on exciting new two-way lighting solutions that you will soon see. Please note we do have Lutron RA2 two-way lighting modules for both Total Control and ccGEN2 lines. To see current inventory of URC Lighting by Lutron as of June, click here."

Bummer, loved those things, especially the MRFB wall dimmers.  Trying to source some now for a job that 3 went bad on several years back.