Tomorrow (Wednesday May 6th) at 12PM Central, Bungie is hosting a live stream on Twitch where they plan on showing off the new coop horde mode, “Prison of Elders” which will be featured during the House of Wolves Expansion. According to Bungie, “teams of three players can take on waves of increasingly difficult enemies to earn high-level legendary and exotic rewards” . This appears to be the fill in for the lack of raid at the beginning of this expansion.
You will be able to view the Twitch stream once it has gone live here .
A new trailer was also released to announce this twitch stream
Destiny Expansion II: House of Wolves, will be available on Tuesday May 19th.