Google's mobile homepage looks different. The tabs for web search and image search are now blue and you can finally use the app launcher. Just click the grid icon to see the same app launcher from the desktop site. Many shortcuts will open the corresponding mobile apps instead of the mobile sites.
For now, the app launcher is only available from the Google homepage and from Google Image Search's homepage.
Google has recently changed the color of the tabs from red to blue for both the desktop site and the mobile site. There's now a bigger Google logo at the top of the page and the header uses more space.