The new Clannad album Nádúr is available now on iTunes. This version features a bonus track called "River Of Dreams" exclusive to iTunes. You'll need I-Tunes software to listen or download the album. On I-Tunes it also says the album is expected to be released on 20th September.
Update: Yeah it's there! You can buy the new Clannad album "Nadur" on I-Tunes. each song for €0,99 (in €-zone).