The Android world rejoiced just a few days ago when Google posted the official Android 3.0 “Honeycomb” preview SDK. Well yesterday it was discovered missing. The page is still there but the preview sdk has been removed from the site.
This could possibly be a bug fix. It’s also possible that Google has removed it because they’ve called a special preview event for Wednesday February 2nd at the Googleplex and want the thunder then. Or maybe it’s because XDA has already put early ports of Honeycomb on the Nook Color and HTC Droid Incredible.
Who knows but if you go looking for the SDK today. It’s gone.
Source: Android Community