Since reading this thread, I've contacted my bike shop to ask about both the IA brakes and the aerobar extension clamps and they say there has never been a recall on either part (assume that means official recall.) Still, if there are improved parts available, I would think it makes sense to replace the previous spec parts.

On the brakes, I cannot find the batch number so far (my understanding is that numbers 15051 or earlier can be upgraded and 15061 or later are the upgraded version), although I have taken off both front and rear covers - is the number printed on the hidden surface of the brake? Meaning you need to first remove the brake cables and then remove the brakes from the bike to find the number?