There have been no major innovations since 2015, when eInk Carta displays were already available. In the meantime, there are eInk Carta 1200 displays, which offer a bit more contrast depending on the manufacturer. Kobo Libra 2 is a good example. Since Kobo is not officially represented in my country, I mainly use PocketBook devices. Here, I like the open system and that metadata like genre or series are fully evaluated and displayed. The latest model, Inkpad 4, is not quite cheap, but I can highly recommend it. It has a 7.8-inch display, a long battery life, and USB-C.
There have been no major innovations since 2015, when eInk Carta displays were already available. In the meantime, there are eInk Carta 1200 displays, which offer a bit more contrast depending on the manufacturer. Kobo Libra 2 is a good example. Since Kobo is not officially represented in my country, I mainly use PocketBook devices. Here, I like the open system and that metadata like genre or series are fully evaluated and displayed. The latest model, Inkpad 4, is not quite cheap, but I can highly recommend it. It has a 7.8-inch display, a long battery life, and USB-C.