Google has been pushing out the new white bar and app launcher to users sometime starting yesterday. An influx of complaints started being published in the Google Web Search Help forums, I linked to one, but there are dozens.
I personally still only see the black bar and I am personally looking forward to switching to the white bar. But many people do not like change and Google knows this and are prepared to handle the early criticism.
In fact, when Google first launched the black navigation bar many many Google users complained, but Google stuck with it.
I guess Google likes to keep the complaints up.
Google has changed their top bar many many times, here are some stories covering the history of those top bars:
- Google Tests Boxy Navigation Bar
- Goodbye Black Google Bar, Welcome Google Drop Down Menu
- Google's Top Down Navigation Design Going Global
- Google Changes Navigation Bar Again
- Google Tests Black Bar
- Google Testing Another Top Bar Navigation Look
- Google Testing New Alternative Search Navigation Links
Forum discussion at Google Web Search Help.