The Xiaomi-13T series, set to be unveiled on September 26, has been subject to leaks and rumors. Initially, only the Xiaomi-13T Pro featured Leica branding, but recent renders indicate that both the standard Xiaomi-13T and the Pro version will have it, likely for European markets.
Consequently, it suggests that the presence of Leica branding on the Xiaomi 13T could be specific to certain regions, like Europe.

In regions without Leica branding, it’s probable that the standard Xiaomi-13T won’t offer Leica-related features such as advanced color processing and filters.

However, it’s important to note that the camera hardware, including a 20MP selfie camera and a triple rear camera setup with a 50MP primary sensor, 50MP telephoto shooter, and a 12MP ultra-wide unit, is expected to remain consistent across all regions.
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Xiaomi-13T series scheduled on September 26
Leaks point to the possibility of a Xiaomi 13T variant incorporating Leica branding.