http://na.finalfantasyxiv.com/lodestone ... d6f626c5c5TL;DR:
- Must complete Alexander (Normal) and Minstrel's Ballad (Ultima Hard) to enter. Quest starts via Minstrel.
- Uses the old binding coil entry system (enter via NPC, progress is saved, each "floor" once per week)
- Uses the old second coil helping system (can re-enter a turn to help but chests won't appear)
- Uses the old binding coil loot system (gear drops per turn)
- Each floor you complete per week will
also give every player a token. Enough tokens can be traded for gear you otherwise didn't win/didn't drop. Unknown how many.
It's basically Coil 3.0. Likely to be the same bosses but with crazier mechanics e.g. Second Coil Savage.