I'm curious what's going to happen to co-installed operating systems that still rely on those keys.

All Apple hardware has Windows drivers thanks to Boot Camp. So presumably those drivers will display function keys.

Linux and the like will be interesting, though.

I think it's a good possibility that for operation systems, and even applications that don't take advantage of the bar that there's a default that behaves like the existing key row.

They don't want co-installed operating systems. Just like they don't want wired headphones.

I was just thinking that earlier today when I was enabling installing apps from "anywhere", which is now a hidden option that can only be enabled from the command line.

You can still install apps from anywhere. The hidden option allows you to bypass gatekeeper, which IMHO is a fantastic security feature that stops people from installing potential malware or unsigned binaries.

Right click the app and choose "Open". No need to turn it on globally.

What will vi users do?

Continue mapping Escape to Caps Lock like we always do :)

'Hey Siri, emulate pressing escape button on keyboard now, please'.

Siri: "I've searched the web for "emulate pressing escape button on keyboard now" for you":

The escape character is ^[ and can always be typed that way.

Have you noticed the correspondence between these alternate terminal incantations and the resultant codes they produce? If an ASCII table is laid out in columns of 32, they are on the same row, e.g.

     (3) ETX <-- C (67)
     (4) EOT <-- D (68)
     (8) BS  <-- H (72)
    (27) ESC <-- [ (91)

I was happy to find some order in what previously seemed arcane stuff.

Remap caps lock -

To be honest, that super-thin row of Esc/F-keys on the 11" Air has been totally useless anyway for real typing, so if I go from there to a new Pro, I wouldn't really miss that stuff.

Using escape in vi is an anti pattern. Use control-[

Why is it an anti-pattern? Surely a single press is more efficient than two?

`imap jj <Esc>` as there are basically no words with two consecutive j's (I use hh for colemak instead)

I usually do C-c or A-j/k/... Esc is not that central to vi.

Caps -> Esc

No volume keys either

courage