It looks like there's a 1.15 beta firmware out now (dated March 18, 2019). No English changelog of course, so there's no way to know for sure what it does. Good luck getting any answers from Hidizs about their firmware updates. I'm honestly surprised that 1.15 exists, since 1.12 remained in beta for nearly a year.
Here's the Google Translate result of the Chinese changelog included in the file:
Modify the content:
1. Fix not supporting individual 192k music files
2. Fix the clock in the system settings, but the screen is still showing the problem.
3. Increase the option to select the font size in the system settings.
4. Fix known bugs
Known bugs seems to cover a ridiculous array of possibilities. It's a great adventure! I can say that they still don't allow the user to disable automatic database updates, and the clock does in fact turn off when it's told to. The font size does change, and the menu options scroll instead of just remaining cut off. So, good things, overall.