Xiaomi won't be making 13S series

Ahead of the Xiaomi 13 series global launch, Xiaomi founder and CEO Lei Jun announced the company will skip on making a half-year update in the form Xiaomi 13S series. As a reminder, Xiaomi launched its 12S and 12S Pro phones six months after the debut of the Xiaomi 12 series. The S-series phones offered subtle camera tweaks and newer chipsets in the same shell as their predecessors.

Lei Jun post on Weibo (machine translated)

The Xiaomi 13 and Xiaomi 13 Pro launched in China back in December and will make their global debuts at MWC Barcelona over the weekend. The Xiaomi 13 Lite is still expected to launch in the coming months and we can also expect more news on the Xiaomi 13 Ultra soon enough.

Source (in Chinese)