But wait, there's more! Update 17 is a substantial patch. A whole slew of updates have been made to different bits of the game. On the DDO Store (and free to VIPs) is a new Monster Manual edition that features new deeds and objectives and two new Creature Companions. In what is arguably the most significant update, Restless Bats -- which don't exist and never have existed ever -- have been removed from the manual.
Augments, a new way to customize your equipment, have been added to the game. Items with augment slots can be, well, Augmented. Slotted Augments give their host item an additional effect for as long as they're slotted. People will be able to find named items with augment slots, pick augmentable items up from the DDO Store, or trust their luck to find one of the 5% of randomly generated items to have an augment slot. This system replaces the old Epic and Guild Augments. You can read up about Augments here.