At the end of the 10th book, The Crippled God, we see the capture/release of a few very important characters.
All the Eleint i.e. the dragons come together to fight the Otataral Dragon. They do this since it's aspect is that of Otataral, which negates magic. All the other Eleint are aspected to some type of magic or warren. They might've killed the Otataral dragon, which according to Kilmandaros, an Elder God, wouldn't bode well for the world. Something to do with maintaining the balance, yin and yang.
But the Bonehunters, along with some other players come together to stop this from happening.
I recall something about the Otataral Dragon being chained maybe? in a cavern under the Adjunct's sword.
Where exactly does the Otataral Dragon a.k.a Korabas end up?