From the KX3 e-mail reflector:
New Elecraft product to be shown and announced this Friday
We’ll be showing a major new product — a KX3 external accessory — at the Visalia DX Convention. You can test-drive one at our booth.
(By the way, I’m not referring to the 2-meter module. But that option will also be the subject of an announcement in the next week or two.)