Good news.
TCL Debuts the Company's NXTPAPER Display Technology Along With TCL 10 TABMAX and TCL 10 TABMID Tablets at IFA 2020.
On the other hand, the "perfect" reflective display doesn't exist. Then, there are 3 options: eInk 6"colour display, this new 10" TCL display or the vaporware Clearink. Nothing else.
NOTE: The news is wrong, the display of these tablets are the typical IPS LCD and not the NXT Paper. You are advised.