Interesting part starts around 2min in.

https://www.youtube.com/watch?v=VaYHb3hrpf8

http://community.riftgame.com/en/2015/04/10/rift-3-2-echoes-of-madness-launches-april-15/

https://www.youtube.com/watch?v=SaHiEV7dTmY

I recomend to take a look at other videos on that chanel too, you can find a lot of usefull informations

http://www.mmorpg.com/showFeature.cfm/feature/9404/page/1

http://forums.riftgame.com/general-discussions/general-discussion/442264-seatins-rift-nightmare-tide-guides-megathread.html

http://forums.riftgame.com/general-discussions/general-discussion/438992-nightmare-tide-gearing-you.html

http://community.riftgame.com/en/2014/10/03/rift-3-0-feature-preview-masteries/

http://community.riftgame.com/en/2014/09/22/nightmare-rifts-endless-torment-endless-rewards/

http://community.riftgame.com/en/2014/09/16/introducing-minions/

Patch notes: http://forums.riftgame.com/general-discussions/patch-notes/433934-rift-2-8-madness-wakes-8-6-14-a.html

Links to new Pyro soul guides:

http://forums.riftgame.com/game-discussions/rift-guides-strategies/class-guides/mage-guides/433758-learning-pyromancer.html

http://forums.riftgame.com/game-discussions/rift-guides-strategies/class-guides/mage-guides/433823-quick-pyromancer-guide.html