It is available now on AliExpress, both in the China and global versions. There are two models, with the higher priced called Mi Band 9 Pro.
As usual, for these band devices, there are very many wrist straps. However the later versions of the wrist straps are unique from the earlier models of these Mi Bands.
Usually my preference are the larger smartwatches with their weekly battery recharging. Not Apple, not Samsung. These larger smartwatches also notify about incoming messages, and other powerful functions.
It seems that Xiaomi's next wearable is right around the corner. Having recently appeared at various regulatory bodies, the device has now surfaced in full on Amazon. As a result, it looks as though the Smart Band 9 Active will receive a global release later this month for just €29.99.