Why do you even mention Lenovos LCD tablets with pen input? And what is "..targeting the mainstream E Ink tablet/reader market rather than the high-end sector.." even supposed to mean?!
This is an e-ink tablet with pen input! For note taking! That is something special. Highly exciting. Ever heard of Kindle Scribe? Or maybe reMarkable?
Although Lenovo has released quite a few Yoga devices so far, the Yoga Paper lineup is new. This leaked product features an E Ink display and pen support, but there are no details regarding the specs, features, or pricing/availability available yet. However, based on the images, the launch could be close.