A little late on the news, but CDJapan announced on June 9th that they now have translated to English ebooks/manga. There’s quite a variety; some popular titles include Deadman Wonderland,Welcome to the N.H.K., Tokyo Ravens, Eureka Seven, and others. The price is in Japanese yen, which makes it quite cheap.
You’d need to download their eBook Reader app available on both iPhone/iPad and Android. There is also a 5% rewards points bonus on all ebooks until Sept. 24th while the norm is usually 1%.