My interest and participation in this thread isn't the practical "Can you still use the d20 license?", but delving into the license and seeing what the actual terms are.
Because I really don't need to pay a lawyer to tell me it's questionable that a forum post on a fan website by an employee of a company means that said company has terminated a license they have with my company even though that license doesn't even have a termination clause (except in the case of breach). It's an overpriced way for someone to tell you, "If you want an official answer, get a legally-binding one straight from the company."
Of course, WotC's intentions are clear, so in the practical sense I'm not going to use the d20 logo since you don't want to mess with the big dog. (And a lawyer is a high priced way for someone to tell you that as well.)
Bottom line - don't use the logo and associated wording anymore.
However, has the d20 STL been
officially revoked/terminated? I still say the d20 STL version 6
cannot be terminated without breach. Until a version 7 comes out that says no one can use the logo anymore, it's still in effect for anyone who "sent in a confirmation card or downloaded the enclosed graphics".
But of course, I wouldn't bet any money on it, because as I said above, you don't mess with the big dog. Right or wrong, they can make a lot of pain for a small publisher. That doesn't mean it's an illegitimate and uninformed question to read the actual legally-binding d20 STL license itself, and not some forum posts in this thread or from any WotC employees and realize that the status of the d20 STL is
technically up in the air at the moment. I don't think analyzing the actual terms of the license warrants:
You are, or work for, a publisher (Dreamscarred Press)?
Yikes.
I'd imagine it's prudent as a publisher to actually dig into these legal documents and see their real terms and implications.
That being said, I will repeat others that
Bottom line - don't use the logo and associated wording anymore. Besides it probably hasn't been worth it for a couple years anyway.