Just began to notice this today, but I booted up my PS4 and was immediately greeted with a message about game mode being enabled. I thought that was a bit odd, as I already had the normal picture game mode enabled in the video settings for the input.
I went back to the Home menu to find that my HDMI switch's input had also been renamed to Playstation 4 automatically. Immediately started searching to try to figure out what could be causing it to find out that OS version 10.0 started rolling out and implemented a new feature, with no way to disable it.
Considering the input's attached to an HDMI switch, I now have an input that's constantly changing names based on what I last powered on, which is obnoxious to say the least.
The idea sounds good enough on paper, but there needs to be a way to toggle it off, and it should default to off in the first place. Nobody enjoys having things they manually set a specific way for a reason constantly changing without input. Especially as there's no way to rollback the update, and I'd assume the intention is to push this out to everyone eventually.