http://www.miaclu.org/ is now updated with a Spanish language press release on the home page and at this link:
http://www.miaclu.org/en/unidos/la-aclu-anuncia-una-campa%C3%B1-nacional-para-detener-la-sb-1070-y-leyes-similares-en-respuesta--0
Also, Andre Segura's Spanish know your rights video is also on the home page:
http://www.miaclu.org/en/unidos/video-de-conozca-sus-derechos-sb1070-y-el-tribunal-supremo