This is apparently something we will see in Las Vegas in August.
http://www.pcworld.com/businesscenter/article/145703/hackers_find_a_new_place_to_hide_rootkits.html a System Management Mode (SMM) rootkit, the software runs in a
protected part of a computer's memory that can be locked and rendered
invisible to the operating system, but which can give attackers a
picture of what's happening in a computer's memory.
The SMM rootkit comes with keylogging and communications software and
could be used to steal sensitive information from a victim's computer.
It was built by Shawn Embleton and Sherri Sparks, who run an Oviedo,
Florida, security company called Clear Hat Consulting.