Six families
Inter, Computer Modern sans, serif and mono, Liberation and Fraktur.
Fonts
Anti-aliased type, at any size.
TempleOS ships one 8x8 bitmap font. The v2 engine adds six families and a native Font Book.
What you get
Settings, Fonts
Pick the interface font and see it everywhere at once.
Font Book
Browse every family, size and weight in a native app.
Boot it and look around.
Build the image, run it in QEMU, and the desktop is there in a few seconds.