De momento sigue haciendo falta el permiso.. Y no solo eso, ahora mismo hay mas restricciones que nunca.
www.gogosc.com/enly_lasanews.asp
TRAVEL RESTRICTIONS IN TIBET
PLEASE NOTE: Important Notice for Travelers to Tibet
☆Present situation of May 1st, 2007
Because of the restrictions, we are not able to arrange ticket to Lhasa at the moment. Please ask us by e-mail for the present situation.
☆Present situation of April 30, 2007
Until further notice when you travel to Tibet you can only visit the Lhasa area. This is due to the protest at Everest Base Camp last week by five westerners.
You may be able to take an organized group tour to Shigatse and other areas, but at the moment this is unlikely due to political reasons. At the moment there are many soldiers situated around Tibet turning back tour groups and making them going back to Lhasa. The rules keep changing daily.
Please speak us by e-mail if you need any more information.