PocketWizard just announced a couple of new radio slave units. I haven't been very excited about radio slaves for a while. But they've really done something special with the two new ones. They support TTL flash metering for Nikon and Canon cameras and they will also time the trigger to provide 1/500th second flash sync. I haven't bought a new radio slave since I got my original set of PocketWizard Plus slaves, 5 or 6 years ago. But I think I will probably be picking up a set of the new FlexTT5 transceivers when they become available.
PocketWizard MiniTT1 Transmitter and FlexTT5 Transceiver Announcement >>