Smart Changes

Google make it easy to swallow with its new version of Android kitkat 4.4. It just have the amazing  visual improvements, black border at the bottom of the screen is terminated in favor of a translucent one. The launcher is also Changed with a decent design.
They make the three buttons hide in the apps, you can swipe them upwards. And performance? The OS is also more intelligent in that it registers touches faster and more accurately which means less errors.
Chromium, the web engine behind Chrome now replaced as a default browser. Chrome now using 16% less memory then it was before, just like other Google apps which are all optimized

Big Changes

Not only perform and look good. It came with decent software changes,The new Hangouts app is quite important in it. The new messaging app combines all of the conversation you’ve ever had with your acquaintances in one place, SMS, MMS or Hangouts video-calls/chatting can be.
The Call app is also tweaked. It automatically highlights those people with whom you’re in touch most. It will also search for businesses in the area around you now, meaning that if you’ll type the name of a restaurant in your area, the app will automatically search the map for its phone number.
The same thing happens when you get a call from an unknown number, as it will try to display a name if the number is from any of the publicly available business in Maps.
The lockscreen features an option to let you fly straight to the camera. It also displays a cover art or any other media highlight when your phone is playing something while being on the lockscreen. Also redesigned is the Downloads app which features even more sorting and viewing options now.
And it isn’t limited to the lockscreen only. If you do a lot of homescreen modifications, you can save and switch between all of them in settings now, without having to sacrifice one in the favor of other.

Availability

The update will  be coming in the few weeks. The new  Nexus 5
came with its old version while the Nexus 4, Nexus 7 (2014), Nexus 10 and the Google Play editions of Galaxy S4 and HTC One are coming with it. We’ll be updating you about it as it is to reaching the market
 we'll get you know about all its feature and qualities.