The Kindle Paperwhite is the first E-ink Kindle model to feature an inbuilt light, and it is putting the lights out on the old Kindle Touch, released earlier this year in the UK. The Kindle Touch is no longer available to buy from the Amazon website.
Although the Kindle Touch hasn't been on sale for all that long in the UK, having arrived in April 2012, it seems there's no longer room on Amazon's virtual shelves for the previous-gen ereader. The primary reason is obvious - the Kindle Paperwhite sells for roughly the same money as the Kindle Touch, at £109 for the Wi-Fi only model and £169 for the 3G edition. The non-touchscreen Kindle is still available, however, at £69.
Other than letting you read in the dark, the Kindle Paperwhite claims to offer improved contrast, and supplies sharper text thanks to increased resolution. The Paperwhite's light is cast across a thin layer that sits above the capacitive touchscreen. Amazon calls it the Nanoimprinted Light Guide. The LED light fires from the side of the screen, a little like an edge-lit TV.
The Kindle Paperwhite is available to pre-order from Amazon now, with the product page showing that the ereader will ship "ship in the week of November 12th".
Although Amazon support for the Kindle Touch has been dropped, the older ereader is still available to buy from other retailers. We presume that's because there are still millions of the things left in warehouses across the world.
As yet, the discontinuing of the Kindle Touch doesn't appear to have causes retailers to start selling the older Kindle at a rock-bottom price. Give it time, though, and you may be able to get yourself an early Christmas present bargain.