It's a theory -- i.e.: we aren't sure, but it is one of the more reasonable explanations that might rationalize some of the more recent/larger CB numbers we've been getting rumours of recently.
To confirm it, we would need a CB number for the airframe being over 180 to confirm or deny it.
(edit: to clarify, I actually made a mistake in the last post, which I've since amended -- I wrote batch 7 originally, rather it should be batch number 07 which is the overall batch 8, given that batch number 00 is batch 1 technically)
Kalec's post from before explains the reasoning fairly well:
This specific one is rumored to be Series No. 61263 with a CB number of CB0X234. However the CB number doesn't make sense to me so take it with a grain of salt. Source: 齐天的孙猴子 Well, I'm a bit sceptical since the image is so small and blurry that reading the serial number is barely...
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