I wonder why Amazon doesn't release a new version of Kindle DX (9.7" E Ink Display). Its hardware is comparable to the old Kindle 2. The Kindle DX was withdraw

I wonder why Amazon doesn't release a new version of Kindle DX (9.7" E Ink Display). Its hardware is comparable to the old Kindle 2. The Kindle DX was withdrawn from sale in October 2012, but in September 2013 was made available again. An improved Kindle DX with touch support for $199 would be awesome. Color e-ink displays exist for years, add one. The new Sony Digital Paper for $1100 is too expensive .