What is so confusing about this? Multiple, multiple people have confirmed that 199/299 for everyone, no matter what.
Yes, if you bought an HTC touch 6 months ago subsidized w. 2 yr agreement, you can still get the iPhone for 199 and sign another 2 yr agreement, AT&T does not normally do this, for obvious reasons, but apparently they are making an exception for the iPhone
Has AT&T issued an official statement or updated their website with this information? No, they haven't. Instead, they used some cryptic language that's not entirely clear on details.
As for your point that multiple people have confirmed it, that means nothing. Just because a few misinformed CSRs told some callers that doesn't make it AT&T's official policy. Additionally, there could have been misunderstandings during those conversations.
Until AT&T makes it officially crystal clear to the public, you and anyone else of the general public know nothing about it.