Considering that the english script from the PS2 version is available and the smartphone ports are all in english, I would say there is a very good chance of a western localisation.
/hugs vmmHere is Square releasing another DQ title for 3DS on japan, while my beloved Terry Wonderland is still to be localized.
Event scenes in the 3DS version of Dragon Quest VIII are fully-voiced and the voice-cast for the game is as follows:
Angelo (Yoshimasa Hosoya)
- Jessica (Ayana Taketatsu)
- Yangus (Fumihiko Tachiki)
- Trode (Hiroshi Iwasaki)
- Princess Medea (Risa Taneda)
- Gerda (Hitomi Nabatame)
- Morrie (Joji Nakata)
- Dhoulmagus (Takehito Koyasu)