We should begin to see RF remotes replacing IR by year end, with the ZigBee RF4CE spec now available for download from the Alliance site. This whitepaper has just been released: http://www.zigbee.org/imwp/download.asp?ContentID=16212
This new presentation is also a good overview of the current state of ZigBee, detailing RF4CE progress as well as Green Power, Healthcare and Enhanced Smart Energy: http://www.zigbee.org/imwp/download.asp?ContentID=16299
There’s even a proposed mockup of how the first RF4CE profile may look (ZigBee Remote Control).
