If I see Japanese release notes for latest OCP, it indicates OCP4.11 instead of 4.1. I believe v4.11 is not accurate.
This situation is applicable only for Japanese document. English version and Chinese version are providing right information. Please check with translation team so that this situation could be solved quickly. Unfortunately this information is stored on Google and Yahoo search engine. Explicit update would be good to purge old cache from those search engines as well.