We owe this discovery to Dr.Murow!, one of the big bosses of the French forum http://www.db-z.com who is in contact with the very friendly Brigitte Lecordier (voice actor for Kid Goku, Kid Gohan, Kid Goten and C-18) via her Facebook account.
The Boo saga is being dubbed since June.
While it is not stated, there's every reason for it to be the international version named as Dragon Ball Z Kai - The Final Chapters as opposed to the on-going Japanese production of the Dragon Ball Kai Majin Boo arc.
While Brigitte Lecordier used to voice Kid Goku, Kid Gohan, Kid Goten, Kid Trunks, C-18, Videl and Kaio Shin back in Dragon Ball Z, several of her roles have been given to other voice actors instead, and she will only keep Kid Goten and C-18 in the new saga (roles that she had to keep because she is most famous and amazing for the roles of the kids from the Son family, and had previously dubbed C-18 in the Kai Cell saga), while Videl, Kid Trunks and Kaio Shin will have other voice actors still unknown for now, probably for the sake of diversity despite Brigitte's talent to modulate her voice.

Direct link to the French forum page with that picture and the announcement of the news: http://www.db-z.com/forum/index.php/topic,101.1290.html
TRANSLATION:

https://fr-fr.facebook.com/kaze.fr
"Enjoy Dragon Ball Z Kai, the high definition remake of Dragon Ball Z, published by Kazé on Blu-ray discs at the end of the summer holidays!"



