I think it's great that people still have hope for this (genuinely, I do), but I get the feeling there's an influx of people who are fairly new to these Sony TVs and aren't fully aware of the history here.
I've had this TV since 2015, and nearly two years later all I've seen is Sony promising things and not delivering: update release dates constantly being pushed further and further back; promised fixes for bugs not appearing; new bugs being introduced - and all the while stuck with the same appalling perfomance we've had since day one.
If you've been around long enough, you'll remember the 600+ page thread that was deleted (read: censored) because it was full of people complaining about the bugs and constant broken promises. I'll repost it here for posterity - https://community.sony.co.uk/t5/android-tv/2015-bravia-android-tv-issues/m-p/1949079
Also make sure to take a look at the Bugs & Issues sticky which is still on the forum and take a moment to understand what you're seeing. You'll see a list of unresolved bugs at the top (many of which have either been there since 2015, or newly introduced in updates that were supposed to fix things, but didn't), followed by a list of resolved issues. Now look at the list of resolved issues. You'll see that the majority of those were issues with third-party apps or services, and were quickly fixed by the relevant developers. Sony didn't have a hand in fixing any of those things - any issues that Sony *are* responsible for fixing are still sat unresolved.
Unfortunatley the rumour above of Android 7 being released also holds important information in that the 2015 / early 2016 TVs won't get things like YouTube HDR because of a different chipset being used between models, but the later 2016 TVs will. We're already seeing fragmentation here, which means Sony will have to keep two versions of the OS updated. So far they've proven that they can't even maintain one.
I'm sorry everyone, but I would prepare yourself for disappointment. All we can do is keep complaining, keep ringing them up, posting on Twitter, whatever... keep pressuring them and with any luck they might get shamed into actually doing something about it.
