Schlage has announced the RP200 Z-Wave compatible light module.  The unit will retail for $49.99, is LiNK compatible, and is now available on Lowes.com.  The RP200 light module supports incandescent lamps only.  Here is the relevant part from their press release:

How often have you come home later than planned to a dark house? The Schlage RP200R Light Module ($49.99) lets you remotely control a Z-Wave-enabled table or floor incandescent lamp from any Internet-connected computer and most Internet-enabled mobile phones. The plug-and-play module includes functionality that makes dimming and on/off controls available on your PC and cell phone, or you can dim a lamp by simply tapping the button on the module itself. You can also program the Schlage LiNK System to turn Z-Wave-enabled lights on whenever specific access codes are entered into a Schlage wireless lock or deadbolt and set on/off timers to conserve energy while you're away. Set up is easy. Just plug the small rectangular Light Module into an AC wall outlet and plug the light you want to control into the wireless control outlet on one end of the module; the other end has a standard AC outlet.

Features and Benefits:

• Control table and floor lamps remotely through the Schlage LiNK web portal with this Z-Wave enabled light module
• With Schlage LiNK, have lights automatically turn on inside the house when you enter your code at the door
• Program your Schlage LiNK solution to automatically turn lights on and off while you are away on vacation
• Expands the Schlage LiNK Z-wave wireless network in your home by extending the system’s range
• Compatible with standard incandescent lighting only
• The light module provides one Z-wave controlled AC outlet and one standard AC outlet
• Turn lights off, on, and dim with the Schlage Light Module
• Schlage light module supports z-wave beaming protocol
• For Incandescent lighting only