Google has just added a hamburger menu, the three horizontal lines, at the top left of the mobile version of the Google home page and all the mobile search results screens. Go to Google.com on your mobile device and you will the menu at the top left of the page. Plus, you will see this menu on most of the Google properties as well.
Here is the home page:
Here is the search results page with it:
When you expand it, it contains a home button, saved button, settings and help buttons.
Saved takes you to the Google Saved portal:
Google has not officially announced this change but it seems to have rolled out for almost everyone I have asked thus far.
Forum discussion at Twitter.
