The April 27 launch was scrapped, leaving no confirmed shipping date in China and no timeline or price for a US release.
Preorder materials had pointed to Android 11, 2GB RAM, 32GB storage, a 1,400mAh battery, adjustable front light and physical buttons on the 95g device.
Chinese promotional prices ranged from RMB299 to RMB339, while broader rumours suggested a regular price in the RMB400s; Xteink is also teasing an updated X4 v2.
After its mysterious launch cancellation, will the S4 e-reader be a game-changer or another piece of 'janky' tech?
Can a sub-$100 Android e-reader truly offer a better experience than the established Amazon Kindle ecosystem?