atm it is fixed (hardcoded in the sw) but it should evolve to such a system where user can modify bindings..
Maybe some early version has few different to select from. AZERTY and ÅÄÖÆØß seems to be most requested ones.

i don't know yet how tight dirkvl has made the dimensions (afaik they are), but this is one (not-the-best-one) way to change the letter markings.
Another option is to use something like Brother P-Touch Label printer with white-on-black to make your own.

(just ideas)