"Over the coming weeks, the new Google Maps will make its way onto desktops around the world. Many of you have been previewing it since its debut last May, and thanks to your helpful feedback we're ready to make the new Maps even more widely available," informs Google.
The new Google Maps promised to bring an immersive experience, a personalized map that shows what's relevant and helps you make smarter decisions using recommendations from your Google+ circles. It's a simplified interface that's closer to the mobile UI. Google removed some of the features from the classic interface and focused on the basics: a map you're encouraged to explore, unified directions that show the best options, instant search, permalinks, panoramic images, Google Earth and Street View without plugins.
Classic Google Maps is still available: you can switch by clicking the "?" icon at the bottom of the page and selecting "Return to classic Google Maps". You'll see this message: "You have switched back to classic Google Maps for this session. Remember this choice for next time?". Click "Yes" to always go to the old interface when visiting Google Maps.