don't know if anyone cares, but... studies>add study>volatility studies>impvolatility TOS desk told me it's supposed to be a new feature released today.
Not a new feature, it's been there for a while now. They did change the volatility skew model though, so maybe that's what they meant by "new".
I see the impvolatility study, but you can't download the actual historic implied volatility data. Or can you?