With Win XP shutting down, i take it Embedded is soon to follow? So, are companies gonna switch to some W8 embedded or a linux version? With Steam also using Linux in their box i guess it'll reach alot higher acceptance.
In my first job we used Unix servers and windows clients. It's not very common to see mixed systems today, but it's fairly common to have mixed systems "under the hood", as many virtual servers are run on BSD/Unix boxes.
/Y