I just discovered this entry in the VEX products Website:
[INDENT]The Long Aluminum Metal Kit consist of the following aluminum parts: (4) C-Channel CHAN-121-35, (4) C-Channel CHAN-151-35, and (4) Angle ANG-HH22-35.
P/N: 275-1410 Long Aluminum Metal Kit $99.99 ea Coming soon[/INDENT]
Verrrrry interesting!
I’m guessing John V-Neun or another of the engineers will be along shortly to formally introduce this, but it’s already on the site.
The C-Channel matches other items already available separately but I couldn’t seem to find a match for Angle ANG_HH22_35, however there is a ANG-22-35 so I’m guessing this new angle is the same or similar.
35-HOLE ALUMINUM FTW!
Thanks IFI 
Oh man I completely missed the aluminum part… Awesome, Almost $10 a piece though:(
This why one of our team rules is “no one cuts aluminum without Mr. TYler’s permission.” This is a responsibility I don’t share with anyone.
For our team, while less strict, we take cutting aluminum very seriously.
We test it with the significantly cheaper steel, and if it works as we think it should, we consider swapping it out for aluminum. Otherwise, aluminum is used as is.
It is very nice to see that we can now build chassis out of aluminum instead of just arms and support structures.