At the end of 2019, it does appear that the future will arrive in 2020-2021. By this we mean that color eInk, and fast refresh rates that support video, will arrive in consumer devices. It appears that the burgeoning eNote devices are the target market for a new color eInk paper product by E Ink and Wacom. It is unclear if this is the same product (without the digitizer interface) that has already been shipping to suppliers. It seems that it is really a marketing deal with a combined product.
While for me the ebook reader is even more compelling (gets greater use) than a tablet/mobile device form factor (though less than a full desktop computer), this is not something people feel a need for. The tablet market is shrinking, and mobile phones are getting larger and larger (metastasizing).
Obviously for book readers, a dedicated eInk eReader device is important. For now, it seems that the eNote devices, in 7.8", 10.3", and 13.3", are to some extent taking on the tablet, and some extent taking on the eReader markets. They are of course doing this by being better in a specific niche (reading and note-taking) than the current batch of tablets and eReaders.
The Boox Note 2 which will be available in November 2019, has a variety of refresh rates and support for Android 9. The refresh rates are very interesting, allowing for a variety of uses:
The Note 2 will have an all new refresh system. This will allow you to watch Youtube videos, stream music or podcasts or do many things online, that typically you wouldn’t be able to do with other e-readers. There are a few modes you need to be aware of. Normal mode is the default e-reading experience or viewing PDF files. Speed Mode provides a little bit more ghosting and is designed for rapidly viewing pictures, this is ideal if you are browsing the internet via Chrome or Firefox. A2 mode which seriously degrades image quality and is only ideal for content with a ton of images. X-Mode is also a new feature, it was designed for watching Youtube videos, it actually performs really well. There are other options here for adjusting global contrast or set the page turn speed.