Android One Powered Affordable phones: What's the big nice about them?

'Android One' is program rolled out first in India by Google. In this program, google made a different version(a kind of stripped down version) of its regular Android operating System to work with low cost hardware. The challenge for Google was that several low end android phones have no way to get the OS updates, and hence they can't enjoy latest android features and apps. Android one has resolved this challenge and that's all about Android One Program. Google has teamed with different vendors (Spice, Micromax, Karbonn as of today) and have launched Android one program in India with price starting above 6K available through on-line retail stores.Google plans to expand Android One outside India as well, this could be through country specific phone vendors.  These devices get OS updates directly from Google whenever available.

The big international smart phone players such as Samsung, HTC, Sony etc,right now use the regular Android OS and put an extra layer of customized UI layer on top of it. These android OS can't directly get the OS updates from Google. The individual vendors need modify their customized android and then give update which takes time. Some vendors will not even promise any system updates once they are sold! And in-fact why vendor customization is what a differentiating factors among android smartphones  and gives competitive advantage. Using Android one vendors can't customize anything but just can make apps and sell the phones. 

Apart from  direct OS updates, low cost, there are other advantages of using Android One phones. People can watch YouTube videos offline. And if you are an Airtel customer, you will get android updates without any data charges(conditions may apply) and free app downloads from Google Play Store till 200 MB per month)

The question is that are international smart phone vendors going to start using Android One? Possibly yes but there is uncertainty about it. I'm guessing the Android version for this segment is called Android Silver, however as such there are no much details about it.