There has been a push to re-organize student loans and the position of the Sallie Mae, Fannie Mae, Freddie Mac, etc organizations for the last 2-3 years.
It has to do with the fact that Sallie Mae, even though it's a publicly traded company, has the implied backing of the government for their loans. They use this backing to borrow money at low, low rates, and use the profits to (theorhetically) drive down costs, but also make agressive/risky investments in derivatives, highly pay their management, and pay a huge lobbying machine to keep their special position. Other banks like Citibank and B of A, and some congressmen, are investigating how to change this.
The federal government intends to spend money- or 'loose' money- on direct student loans so the questions are about what is the best way to do that- through Sallie Mae, directly, or some other competitive way.
These changes are pretty controversial so they probably won't happen soon. Once we consolidate, is there any chance of the terms changing in the future? I hope not.
There aren't specific solutions on the table yet so they probably won't change in the next 6 months, but...
Interesting testimony to congress on student loans from 2002:
http://www.cbo.gov/showdoc.cfm?index=5223&sequence=0