I THINK this person dies... possible *Spoiler*
Don't read if you want to read SPOILERS
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Okay, so if you go to the main blizzard/starcraft 2 site, and go to the Zealot unit, you can click a button to hear what they say, if you click it a certain amount of times, he says:
"For Artanis"
so it seems that they'd want to avenge him or something for his possible death.. maybe not, just thinking.