I had asked a dealer in Bangkok. They said I have to pay full in advance and wait around 4 months. Later I contact Leica Singapore who said almost the same (pay full price and wait up to four months). With the cheaper price, I decided to order it. One month later, they contacted me to get my MP. It is the new one, 5xxxxxx serial no. and dated November 2019.
If you really want the new one. I think it is worth to wait.