@JuneJuly "I get that it requires other actions to even make use of it, I understand that, what I don't understand is why it's happened without informing people. No information regarding this being put onto software, no notification, no announcement, nothing. Why?"
Because it does nothing and means nothing. It's a preparatory firmware update. If you never download the track and trace app once it's available, this feature will not matter to you one jot. Similar to if, say, you checked your phone and realised they'd added some firmware to make your phone compatible with your car's Bluetooth, or with a new smart watch. You would have to buy the watch for that feature to ever become relevant.
If the API for the track and trace does absolutely nothing on its own, then why do you believe you should have been made more aware of it coming along? It literally doesn't affect you or the way you use your device. It's redundant.
And then of course there's the fact everybody was notified. It just wasn't put out as front page news because, as previously mentioned, it does nothing and causes absolutely no breach of your privacy.