With other stuff in the status bar, such as the time and battery being updated to use a bolder, more readable look, I think the other icons should be updated too. Especially a few like the Wi-Fi icon and Mobile data icon desperately need changes.
Those 2 I mentioned need to be made thicker. Apart from that, I think the Wi-Fi version and upload/download indicators don't need to be shown with the Wi-Fi icon, as most users don't benefit from that information at a glance and it makes it harder to see.
