Last year Arch integrated the features from the TalkingArch project into archiso and some months ago they added an installer into their installation medium. As a result, and with some delay, TalkingParabola was deprecated and we added these features to our ISOs too. They are available in out download page as well.
Note that although the OpenRC LXDE ISO has the speech boot option, this only works for CLI. Screen reader support will be added in the future for the GUI and the current installer will be replaced with one based in Zen Installer.