The main thing is not to get confused about the names
The XiaomiUI resource found in Mi Code mentions another representative of the Redmi Note 13 line, which has not yet been officially presented. This is the Redmi Note 13R Pro.
It would seem that the name indicates that the Redmi Note 13R Pro should be a variant of the Redmi Note 13 Pro, but no: the code designation of the future smartphone is gold_a, similar to the code designation Redmi Note 13 5G (gold). In other words, the Redmi Note 13R Pro will be a variant of the Redmi Note 13 5G.
How will Redmi Note 13R Pro differ from Redmi Note 13 5G? XiaomiUI indicates that the new model will have a 64-megapixel sensor instead of the 108-megapixel one used in the Redmi Note 13 5G. There may be some other differences, but nothing is known about this yet. The premiere of Redmi Note 13R Pro in China is expected in November, and with a high degree of probability, this model will not enter the global market.