There are rumors going around that she will stop doing voice over work because of her focusing on other things like a play or having a new album, but just recently, this rumor has been proven false because she will voice Final Fantasy XI's other representative, Prishe!
Prishe was first seen on the 1st Production Department Premiere Trailer of the game in which he approached the helmet-less Warrior of Light and so far, it is not yet confirmed on which side is she part of but most of them assumed that she is part of Chaos side due to Shantotto being part of Cosmos side in the previous game.
Her combat style is Combo Maker, described as freely combining moves and chaining them into special attacks. She attacks using a combination of White Magic and Monk Weapon Skills, such as Howling Fist and Backhand Blow for Brave Attacks, and her two trademark moves from Final Fantasy XI, Auroral Uppercut and Nullifying Dropkick, as HP Attacks. Her EX Burst is Shining Five.
Source: kotaku, Final Fantasy Wikia