There has been no mention of PineNote on the Pine64 blog for quite a few months, but that changed yesterday.
https://www.pine64.org/2023/04/01/ma...ablet-bonanza/
linux can now be flashed to the PineNote over USB without having to use the UART.
There is now a customised debian with customized GNOME (optimized for gray scale and animations and shadows removed).
Screen performance and pen support have also been improved.
No word on being back in stock, but some hints that it might happen sometime were dropped.