The Release Early/Often example describes a situation of releasing a product that does not have all the features of its competitors: "The Windows Operating System, in the initial version (1.0) did not support overlapping windows which was a breakthrough feature on the then contemporary Macintosh."

Identically, the Polished Release example also describes a situation of releasing a product that does not have all the features of its competitors: The first version of iOS "(then called as iPhone OS), did not even have MMS"

Seems like the author didn't pick a great example to demonstrate a Polished Release.