Yes the "recall" is for US units too.
From a letter I received from Bose:
"The symptoms that have been reported to Bose include loss or intermittent failures of audio, microphone function, and/or active noise reduction, as well as the possibility of a noticeable temperature rise in the control cable"
I guess they are aren't' calling it a recall as they are not asking for the units back. They are planning on sending new "down cable assemblies" as soon as they can.
I LOVE the new A20. It totally blows away both the Zulu
and the Bose X. (I have both) I have written a
Bose A20 review on my blog.