As expected, Kobo released two e-readers - the Kobo Aura One and the Kobo Aura (Edition 2). The Kobo Aura 2 is a six inch e-reader that comes with an E-Ink Carta screen and a lower 212 ppi. As 'The eBook Reader' states, the Kobo Aura (Edition 2) makes little sense. The Kobo Glo HD is an ereader with 300 ppi and a similar E-Ink Carta screen and is only $10 more than the Kobo Aura Edition 2. The price differential is minimal that it becomes difficult to understand how this device fits in the Kobo e-reader line up.
The 7.8 inch Kobo Aura One, on the other hand, is an innovative e-reader. I am interested to see if Kobo managed to get the front-light to work with the larger display (early reviews appear to be positive about the front-light). With the front-light comes a blue light filter termed 'ComfortLight PRO'. ComfortLight PRO, in the words of Kobo, works by "reducing blue-light exposure, the enhanced front-light technology protects your eyes and provides the best nighttime reading experience. The automatic setting mimics the sun’s natural progression, emitting the optimal brightness and hue based on the time of day". Personally, I generally turn off the front-light but for those wishing to use the front-light, for night time reading, the user is able to change the colour temperature to ease eye fatigue.
The device's let down, judging from this review, is the little work done by Kobo to improve the PDF reading experience. You still can't highlight and annotate and the touch to zoom appears to be inconsistent. Thankfully it might not be a serious problem, as KOReader should release a version for the Kobo Aura One.
Amazon may respond to Kobo, in regards to hardware enhancements. However, judging from the past - as posted before - I don't think Amazon will release a larger e-reader. History tells us Amazon responds to hardware enhancements - e.g. front light and screen resolution - but ignores, since the Kindle DX, screen size differentiation. Also, Amazon operates at a different level to Kobo and may judge a turn of direction, to include a larger e-reader, a risk. The uniform six inch is viewed, by Amazon, as the right size for an e-reader - light and the size of a paperback book. Further, to go large means a re-think of the Kindle line-up. The good thing with the Kobo Aura One is that it is more open than Amazon's Kindle range. Further, with its larger size, coupled with KOReader, it makes an excellent multi-purpose stand-alone e-reader.