Well after some months finally the official site has announced the release date, Tales of Symphonia United World Vol. 1 will on November 23, 2011. Also for of the news were the got a Twitter account.
And for the opening theme ホ・ン・ト・ウ・ソ (HO・N・TO・U・SO) by the artist Me (Misono) will be released on November 23 just like the ToS United World Vol.1.
Lastly the ending theme 誰ガ為ノ世界 (Ta ga Tame no Sekai) by the same artist of the last ending theme Akiko Shikata, It has already been out and it's in youtube.
