Google seems to have rolled out a brand new Google.com for webkit based mobile browsers.
They have added a sidebar which has become very common on mobile apps like Google+ and Facebook.
This sidebar provide quick access to all the popular Google services.
Older version of Google.com had these services available at the top through an expandable navigation bar.
I am personally not a fan of sliding sidebar but I guess it is becoming a new standard on mobile devices.
This update is not yet accessible on my phone so it is probably still being rolled out globally.
Update: It worked when I tried loading Google Australia homepage!