3.9.0: the Pi gets every app, sharp

settings, finder, mail, weather, stocks, reminders and four games, all in spotlight and all drawn at 2x
clipboard, resizable windows, ink menu bar icons, graphite grey wallpaper (grey first in settings) and the flushed boot splash
the 17 pi checks pass, and the fan check is strict on solid grey runs

Boot it

The release above includes joshuatree-3.9.0.iso, a bootable disk image. Write it to a USB stick to boot on real hardware:

macOS:

diskutil list                    # find the disk (e.g. disk2)
sudo dd if=joshuatree-3.9.0.iso of=/dev/rdiskN bs=4m

Linux:

lsblk                            # find the device (e.g. sdb)
sudo dd if=joshuatree-3.9.0.iso of=/dev/sdX bs=4M status=progress conv=fsync

This will erase the stick. Double-check the device path first. Boot the machine from the USB stick (F12/F10/Esc/Del at power-on for most PCs) to start the kernel.

The ISO is proven to boot in QEMU (CD-ROM and USB-style raw disk) via the CI regression suite. Real hardware testing is ongoing.