The device supports PDF and ePub formats, but it seems to be geared toward writing and drawing as much as reading. It has a 10.3-inch E Ink screen with a resolution of 1872 x 1404 (226 ppi). It features a capacitive touchscreen and a Wacom-based touchscreen to use a stylus pen that supports 2048 levels of pressure sensitivity.
Pre-orders are currently available from the reMarkable website for $479.
What is “remarkable” is that it is much cheaper than the 13.3″ Sony DPT-RP1 which has no ePub support.
See http://blog.the-ebook-reader.com/2017/05/31/videos-showing-new-remarkable-paper-tablet-in-action/ 
Videos Showing New reMarkable Paper Tablet in Action | The eBook Reader Blog
The 10.3-inch E Ink reMarkable paper tablet was unveiled last November when they first started accepting pre-orders for it. This week the reMarkable has been