Although the installer obtains the type of keyboard from
the user at the beginning of the installation, Xconfigurator
(called by installer) does not appear to detect this info,
or have a way to be passed this info by installer. The
result is that, after standard installation, the console
works correctly, but X uses a mismapped keyboard for
everyone except those with a pc101/us keyboard (who are
admittedly in the majority).
The fix would be to add an option to Xconfigurator to
override default XkbModel and XkbLayout; installer could
then pass correct parameters.
The new installer which will ship in the next release has this bug fixed. The
keyboard selected at the beginning of the installation is indeed passed into
Xconfigurator and written to the XF86Config file.