The first question people are likely to ask: If the most recent version of MySQL was a 5.x release, why’s this one 8.0? For one, version 6.0 was canned as part of the transition to “more frequent and timely releases of the MySQL Server.” Version 7 was reserved for the clustering version of MySQL. That leaves 8.x as the next major version number for the common use-case version of MySQL.
翻譯成中文就是：
人們可能會問的第一個問題是:如果MySQL的最新版本是5.x release，爲什麼是8.0呢？首先，6.0版本被作爲過渡到“更頻繁和及時的MySQL服務器版本”的一部分。版本7是爲MySQL的集羣版本保留的。這使得8.x作爲MySQL常用用例版本的下一個主要版本號。