I think it'll be around 1500. Note only one delivery center (Beijing) was operating back to May. In June there has two (Beijing and Shanghai). Assume each delivery center has same run rate, so probably China delivery will be ended up ~1500. I guess in Q2, there will not be delivery growth to EU and US markets. All the delivery delta will be absorbed by China and UK.
You may be right. I just heard that 400 Teslas just arrived at the Shanghai port.