Lots more.
http://benheck.com/07-12-2007/inside-the-xbox-360-elite
This is the famous "Xbox 360 Laptop guy". He's taken a few Xbox 360's apart to build into portable laptops. He knows his way around an Xbox 360.
He decided to build a new one off of an Xbox 360 Elite, and does a component-by-component analysis of the Elite X360s to show the design model differences.
The X360 elite has (that old models don't have):
HDMI (duh), and all the standard X360 Elite-stuff
2nd Heatsink (like the newer refurbished X360s)
New BenQ DVD Drive that's quieter
New thermal glue/paste for the CPU/GPU combo.
Basically, the rundown is that since the Elite launched (as his is a basic elite), that MS has implemented, as of then, the major changes to heatsinks to fix the RROD issues. Obviously, the 65nm will do even more. But for those really wanting an X360: The Elite seems to be the most reliable until the premiums are sold out. If you can get a new(er) X360 Premium (April 2007+), you should be fine. However, All the elites are made past this date, so it's automatic.
Just a few words to those considering an X360. Now, with the price drop, the older units should make their way into consumers hands, so I'd say in 1-2 months, the real old stock should be gone, and the new better ones (pre-Falcon, post-RROD issues).
Back from the dead, I'm afraid.
