I have/am selling a 2.4 wired. I don't know where the 2.4 came from but there are definitely wired and wireless versions of the head.
btw that email that I copy/pasted (without the guy's name) was sent to me from Saris on October 22 - in other words, about two weeks ago.
cdr
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"...during the Lance years, being fit became the No. 1 thing. Totally the only thing. It’s a big part of what we do, but fitness is not the only thing. There’s skills, there’s tactics … there’s all kinds of stuff..." Tim Johnson