The folks at Android Police spotted Android 11 preview page, Of course, since the company hasn’t made any official announcements on this issue yet, the change was almost certainly a mistake on someone’s part, and Google has now taken down the Android Developer Preview page in its entirety.
Currently none of the “Behavior changes” or “Privacy features” or “New features & APIs” links work. If that changes, we’ll certainly let you know.
The Android 11 Developer Preview page also states that it was updated today, February 13. This was a deliberate change.
As per the screenshot, Android 11 is shown to comes with privacy-focused features, API support for foldable smartphones, better sharing connectivity and a lot more. However, the mentioned features are also mentioned in the Android 10 listing on the website.