I am a retailer and not the manufacturer. As much as I'd like to be able to give you a guaranteed fix date, I cannot. I rely on what HiMedia tell me.
The new firmware promised for end of March is Android 7 not 5.1. A test version of it was released on the next Android 7 firmware thread on 31-MAR. It didn't deliver what we all wanted but it at least showed progress.
I met with HiMedia last week and made it very clear to them that the main bugs (Kodi 17.1 HD Audio, HDR aspect ratio, subtitle stutter/gaps) must be fixed. I was as direct as possible.
What came from that meeting (and what we knew already) is that the Kodi and HDR aspect ratio problems require fixes from HiSilicon. These problems are apparent on other HiSilicon based hardware too. The advantage HiMedia have is that they share a parent with HiSilicon (Huawei). This means fixes will come first to HiMedia.
In the meantime the HDR aspect ratio problem can be worked around by using a different media player app (e.g. Archos Video Player).
And if were speaking from SDK level fixes, please let' s not forget the other -immemorially hanging-- mayor bugs:
1. Proper DVD frame rate switching,
2. Proper 3D iso frame rate,
3. Screensaver/dimmer in HimediaPlayer,
4. Correct and more "intelligent" Auto subtitle encoding recognition (on "other than English" languages as well...)
(And this list is still very far from attempting to be comprehensive.)
(I won't even mention the other common "side bug" fixes and appreciated feature extension requests.-> Tho' they are expected as well by many of us, and some of them even promised here a long time ago... And that's why well known and could be listed by many of us in a blink, just from remembrance.)
Thank you!