Posted by the Elecraft folk on the QRP mail lists:
KX3: Ultra-compact K3/KX1 hybrid; 160-6 m, 10/100 W, all-mode, 32-bit DSP/SDR, 1.5 lbs.
Dimensions: 3.5"H x 7.4"W x 1.7"D -- a bit larger in all dimensions than a KX1.
(By the way, I'd like to thank everyone on the list who's sent us suggestions for a next-generation portable over the years. Many great ideas!)
Details will be posted to the Elecraft Website this weekend.
72 de Larry W2LJ
QRP - When you care to send the very least!