http://www.xbox360achievements.org/news/news-13533-New-Rage-Achievements-Reveal--The-Scorchers--DLC-is-Coming.html

So we all seen the Scorchers rumour on the web and nothing else followed from that, well now we have new evidence of it, bolder, stronger evidence!

Achievements have been leaked, the one that gets my interest is the inclusion of a new difficulty "Ultra Nightmare"

I personally can't wait