Where did you hear that? There was nothing about it in the official trailer for the new DLC.
I'm looking here: http://www.callofduty.com/blackops2/dlc/dlc4-apocalypse
I see nothing regarding new prestiges.
I actually seen it on one of these forums but I personally thought it was too late to add new prestiges but ever since Black Ops 2 was released there has been 15 prestige levels pictured and I assumed they would be unlocked at some point like MW3.
OK, now I'm confused.. If you heard it was being released Aug 27 then why ask when it's going to be released.
and also Dev's don't post on here so if you heard it on here it's just someone spreading rumors. Unless you have seen a tweet from a dev, you can pretty much write it off as a lie.
Devs do post on here, just not very often and why would they, the recent reactions on twitter and the general attitude of the post on these boards is terrible.
There are no additional prestiges in BO2. There is no need for them at all, since you can just reset with a token.