Ritual of the Mahjarrat

Ritual of the Mahjarrat (ROTM) is a planned future quest to be released in September 2011. It has been confirmed that it will be the final quest in the Mysteries of the Mahjarrat series and that it will be a Grandmaster quest. The Mahjarrat Ritual of Rejuvenation will take place during the quest and Sliske, a strange, mysterious Mahjarrat subject to much speculation, will be involved in it. The Chaos Elemental hinted that more than one Mahjarrat will die in the quest.

Confirmed facts
In the latest Development diary, hidden updates, and BTS some facts have been revealed through text, images, and ingame content.
 * The quest will involve Kethsi and Mos Le'Harmless.
 * Mahjarrat (or at least Zemouregal) will receive a graphical update.
 * There will be a lot of history in it, especially on the Third Age.
 * There will be lots of new areas and puzzles, as well as combat, but not as hard as Nomad as it is more storyline- than combat-orientated.
 * There will be "some Mahjarrat death", which the player has no choice in.
 * The quest will leave some loose ends on some storylines.
 * A major plotline, "which has only really been touched on before", begins in earnest during the quest.
 * It is coming in the latter half of September 2011, according to Behind the Scenes - September.

Rewards

 * Rewards include huge XP lamps, access to a new reward dungeon, equipment, a new spell, ranging gear, and new gear for the feet slot.

Trivia

 * It was originally believed that 78 Woodcutting, 83 Fletching and 65 Dungeoneering would be requirements for this quest but it was confirmed that this was false. Paul Gower stated that they were probably for a different quest.
 * There was a leak on Facebook on 8 June 2011 that this quest would be released July that year, which was removed quickly after it appeared. After this, Mod Mark confirmed this was not true, and should not have been added to Facebook at all, as seen on the image below.
 * This will be the first quest to have a Grandmaster quest as a requirement.