As far as i know the only benefit to a RF thermostat is that you can replace an existing thermostat in a retro fit scenario.

When you say "an RF thermostat talking to an RF lighting system" what do you mean? Is this a new product? Part of RadioRa2? Or something else?

Any thermostat that can communicate with a control system can be used to trigger lighting scenes or whatever else you can think of but wired or RF has nothing to do with it. The control systems capabilites are the important thing.

EDIT: Nevermind i googled RadioRa2 thermostat and found it in the CEPro article. I had no idea they were adding a thermostat.. Mostly because theres no mention of it at radiora2.com :).

To clarify what i was saying earlier.. The thermostat being RF will just make it easier to install in a retro fit application. The lighting processor will handle scenes and its already possible to use a 3rd party thermostat to do what you described.