OMG, here you go...
Not that I have seen. All of the wifi tethering apps require that you be jailbroken and, until we get 5.0 jailbroken, you may be SOL. And to make things worse, one of the key developers who ran the site
jailbreak.me for untethered jailbreaking (Comex), has taken an intern position at Apple and says that he will no longer do it (
Link).
Of course other DEVs are working on it, but it may be longer than usual with Comex's talents in on it.
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