10.7 media can be made by digging in to the .app and using disk utility, either to optical or bootable partition:
http://forkbombr.net/need-a-burn-a-lion-boot-disc/
Hopefully NetInstall images can be made the same way as this then:
http://yourmacguy.wordpress.com/2009/10/13/leopard-to-snow-leopard-upgrade-netinstall/
New machines will prolly go the way of the Air and come with a USB stick, goodbye optical nice knowing you, I won't miss your slow install times and seek sounds :) I look forward to a free drive bay for a 2nd drive (Time Machine built in?!)
Joel Bruner
Y&R Brands
Creative technology Specialist