[AnkhMorporkian]

I'm curious as to what they mean by 'outdated.' Is the actual language outdated or simply the architecture? I would assume the latter, but it's tough to tell. I just can't figure out how assembly could become outdated.

[tuukkah]

Each processor has its own instruction set and thus assembly. Further, there are various assembly syntax dialects that can fall in and out of use. For example, the AT&T syntax and Intel syntax used for x86: https://en.m.wikipedia.org/wiki/X86_assembly_language#Syntax