Other brands(not all) will provide Kitkat upgrades but yet it's to be decided and declared. Till now Kitkat has not been avail for other brands or devices. It is only in-built in the Google's own device Nexus 5 and now devices will need 512MB of RAM to upgrade to Kitkat.
Seven years ago, Android was launched and today it is the world's number one mobile OS. Since its inception we have seen many updates and upgrades of Android and they have name it uniquely. Let's have a look at all the Android version and their code name :
Ice Cream Sandwich (4.0–4.0.4)
Jelly Bean (4.1–4.3)
Every version has many unique and extraordinary features. This is the reason why Android is the world's best mobile platform. So far, Jelly Bean is awesome version and most of us have used it. Let's have the unique features of Android's latest version 'Kitkat':
1. Built-in screen recording feature
2. Bluetooth Message Access Profile (MAP) support
3. Applications in "immerse mode" to keep the navigation and status bars
hidden while maintaining user interaction
4. Sensor batching, step detector and counter APIs
5. Improvements to auto focus
6. More security enhancements and bug fixes
7. Audio tunneling, audio monitoring, loudness enhancer
"People says 143. I say 444 i.e. Love Your Life"