Yes, it is very safe to visit Xinjiang now. The Uyghur people are some of the most friendly you’ll ever meet. Most visitors feel it is totally safe in the main tourist areas, though there may be an elevated police presence.
1) A classic route of Southern Xinjiang
2) Drive on the spectacular Pamir Plateau and enjoy the beautiful scenery of Karakul lake
3) Explore the Kashgar old town
4) Visit to the local Uighur Family