A big 3.9.2 patch is coming most likely today. It will consist mainly instance crash fixes. The best thing about every patch is that GGG is monitoring the community feedback and actually listens to players when developing new patches. You can check out the official news thread here.
You can get two new MTX pieces for free when you link your Twitch account to your Path of Exile account and subscribe with Twitch Prime. You can check out the skins here.
On another note, at this page you check out all of the unique items introduced in the Metamorph league.