John C. Dvorak believes Apple's announcement of moving to Intel processors will mainly hit Linux as users and developers now have a new x86 alternative to Microsoft Windows.
Microsoft will be affected because of this new competitor and the possibility that people will more readily switch to the Mac. But it seems that Linux has the most to lose. Linux was the only X86 alternative to Microsoft and now it has both Bill Gates and Steve Jobs to contend with -- two "last man standing" types. I think Red Hat and all the other Linux distributors have a problem.