求翻译：12．Google's Android keynote was so dense, so sketchy, and so far-reaching that even preliminary conclusions about its full impact are months away. By then, I'll have returned to Moscone West for WWDC, Apple's developer conference, which starts on June 6. Apple being Apple, it's done an outstanding job of keeping its plans for iOS 5 secret. But this we already know: when it discloses them next month, the mobile world will change once again.是什么意思？

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