We were promised this back in 2013, but I haven't seen any news about it lately. I was really looking forward to them, being able to fight equally geared players (much like on the Test Live servers) while leveling my PvP level.
It is extremely rough starting out in PvP as a fresh level 80, and while Unchained Minigames would solve the majority of the issues, another suggestion I have heard often is just to allow PvP 0s buy the T1 PvP set for gold. The T1 PvP set is very competitive, even against the T3 PvP set, so if every level 80 had a set of T1 minigames would be a lot more balanced and fun.
Let this thread serve the purpose of discussing Unchained Minigames, and provide constructive criticism / support towards the idea.