Now, this is a highly speculative story but an interesting one, nonetheless. It appears that Xiaomiui dug up a total of four IMEIs from a Chinese database assigned to four model numbers. It's believed that these model numbers represent the Chinese and global variants of the Xiaomi 13 and 13 Pro.
The model numbers in question are 221113C and 2210132C - those are for the Chinese market while their global counterparts are 2211133G and 2210132G, hence the letter "G" at the end.
It seems as if Xiaomi has already started developing the Xiaomi 13 series even though the Xiaomi 12 Ultra hasn't been released yet. This is why Xiaomiui speculates that the next-generation Xiaomi flagship phones will arrive sooner than anticipated, supposedly sometime in November. The usual release schedule of Xiaomi's flagship numeric series is in December, as the company tries to be one of the first to adopt the latest and greatest from Qualcomm. This, in turn, means that Qualcomm could be looking for an earlier release of its Snapdragon Gen 2 chip sooner as well.
I have read somewhere that the 13 won't have telephoto, compact form factor or IP rating
When is the Xiaomi 12 Lite going to be announced?