Just wait for they guy who was angry about the change. He might take a glimps into this topic as well and comes up with the source. This was the topic:
“A savant who tamed the power of raw arcane, weaving its chaos with the art of runes. The Runemaster infuses magic into offensive and protective wards that devastate those who trespass them, ensnaring his foes, raising walls and golems at his whim.”
That was the full discription. Just read it and the dev responses should make it obvious that nothing is set in stone and subject to change like if the game was… well… an EA title 
.