Xiaomi started selling the new Emerald Green Mi Mix 2S today and the Jade Art version is already sold out. At the time of writing, according to Xiaomi's website there are still regular Emerald Mi Mix 2S units available for purchase but we expect them to run out fast. Both units are identical to the regular Xiaomi Mi Mix 2S outside of their appearance and the fact that they come in 8GB/256GB configuration. You can still go for the standard 6GB/64GB and 6GB/128GB models over at Xiaomi's online retail store. Source
Source: https://www.gsmarena.com/first_batch_of_emerald_green_xiaomi_mi_mix_2s_sells_out_in_a_flash-news-32755.php