Thorsten Leemhuis (fedora(a)leemhuis.info) said:
Especially for Computer-Magazines and on fairs/FUNCon's where we
out DVD's. Having one Media that can handle both architectures would
simplify a lot of things and lower the cost.
(Would even be better if the DVD would bundle i386, x86-64 and a i386
Probably the biggest issue is the booting of it... you'd need to pick
the architecture at the boot stage, as you can't install x86_64 correctly
from a ia32 kernel, as all the relevant %posts will fail.