This's a wonderful JPOP news and I never thought that would happen again. Aice5 (Aice⁵ - The correct name) was a popular idol group eight years ago, in an age where the Internet is still bad, communications are difficult, television is the only thing they had. They went up to the pinnacle of their achievement in a short time and was eventually dispersed. I think they are the best idol group of that era and forever.
Right now they're reunited. Aice⁵ officially announced that they will come back to the fans to create the greatness once again. They will come with a new single and will appear in "Sore ga Seiyuu! (それが声優！)" anime about voice actress' life (Slice of Life). I also heard that there're three new songs in the single, but still no more details at this time.
Aice5 was formed in 2005, the combination of five famous female Seiyuu during that period. They are one of the first idol generation in the Japanese music industry.
Horie Yui (堀江 由子)
Role as Charles from Fairy Tail, Kushieda Minori from Toradora
Takahashi Chiaki (高橋 千晶)
Role as Kusunoki Yua from ChäoS;HEAd, Miura Azusa from The iDOLM@STER
Kanda Akemi (神田 朱未)
Role as Kagurazaka Asuna from Mahou Sensei Negima!, Fujibayashi Ryou from Clannad
Asano Masumi (浅野 真澄)
Role as Mai from Popo-tan, Flower from Kowarekake no Orgel
Kimura Madoka (木村まどか)
Role as Hidaka Sana from Myself ; Yourself, Akashi Yuuna from Mahou Sensei Negima!
Aice5 have their works 6 singles include Get Back (March 11, 2006), Believe My Love (May 24, 2006), Love Power (October 25, 2006), Brand New Day (April 25, 2007), Letter (April 29, 2007), Re.MEMBER (September 5, 2007), and 1 album "Love Aice5" (February 14, 2007) features all three of the group's first singles.
This year 2015 was also the 10th anniversary of the forming Aice5 idol group. (Is there a significance?)