Right...
Yep - GPEngine 0.5 supports the RF link (and very well too!), but it isn;t on genral release, and was only released for the people who came to the Brit meetup last year. Also, fSMS and fNES support it too, but they go out of sync after a minute or so, and the glitch hasn't been corrected because Rlyeh doesen't have access to RF units to test it.
GPAsteroids also supports it, and is a right laff when you get together...!