I'm sorry but from what I have been told, this is completely false. I spoke with AT&T today and this is what they told me at least in regards to my Titan.
The update is released (by MS) for specific devices to the phone manufacturer. The phone manufacturer in this case is HTC. They then do their "tweaks" and then the update is sent to AT&T for further testing if needed.
AT&T knew nothing about the update. HTC had no record of the update being released to them specifically for the AT&T Titan (just because it's called a Titan doesn't mean it can be updated like "other" Titans). Hence no clearer idea on when the update will be released for the AT&T Titan. Oh, and also, not every phone (be it Titan, HD7s, etc) will get every update. Which means my phone may not be updated until the next major release and even then it may not get that one.
I am just relaying what was told to me by the AT&T tech person. I believe she was being as honest as possible with the info she had, she put me on hold to call the HTC rep to ask them the question as well. So in short don't hold your breath for middle of February.